Exact SPX closing-direction quotes lean upward for today; the opening contract is too wide and Hilton earnings participation is very low. Full dated evidence is retained in the audit; these quotes do not clear a trade.
Additional index and earnings coverage audit
{
"asOf": "2026-10-21",
"checkedAt": "2026-10-21T05:51:18.257Z",
"actualIndexMarkets": [
{
"id": "5968117",
"question": "S&P 500 (SPX) Up or Down on October 21?",
"instrument": "S&P 500, underlying requires rules",
"sourceUrl": "https://polymarket.com/event/spx-up-or-down-on-october-21-2026",
"rules": "This market will resolve to \"Up\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Wednesday, October 21, 2026 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nThis market will resolve to \"Down\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Wednesday, October 21, 2026 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nE.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day.\n\nIf the two specified closing prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding.\n\nIf SPX does not trade at all during the regular session, the market will resolve 50-50.\n\nIf either of the relevant days are shortened (for example, due to a market holiday schedule), the official closing price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf either of the relevant days have no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Close values published by the WSJ under \"Historical Prices\".\n\nUS: https://www.wsj.com/market-data/stocks\nEMEA: https://www.wsj.com/market-data/stocks/emea \nASIA: https://www.wsj.com/market-data/stocks/asia",
"resolutionSource": "https://www.wsj.com/market-data/stocks",
"deadline": "2026-10-21T20:00:00Z",
"active": true,
"closed": false,
"acceptingOrders": true,
"updatedAt": "2026-10-21T05:42:57.094214Z",
"volume24hr": 7429.023069,
"outcomes": "[\"Up\", \"Down\"]",
"tokens": "[\"51452347711911692226301168120363240992013639850731230311050039295011876739957\", \"52681726221695574563800003966635309535337484895013236676087095396371049243804\"]",
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"ask": 0.7,
"spread": 0.010000000000000009,
"midpoint": 0.695,
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"checkedAt": "2026-10-21T05:45:18.318Z",
"lastTradeUsed": false,
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{
"outcome": "Down",
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"lastTradeUsed": false,
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],
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"assessment": "69.5%close-up midpoint estimate at69/70cents;1-cent spread,518.79share best depth and7429.02reported24hvolume. Modest-liquidity supportive directional context over this specific session only; not a calibrated stock-trade probability.",
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"qualityReview": [
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"status": "observed_current_book",
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{
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"limitation": "Single timestamped order-book observation; no guaranteed execution, calibrated forecast or stock trade-success probability."
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},
{
"id": "5968127",
"question": "S&P 500 (SPX) Opens Up or Down on October 21?",
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"rules": "This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on October 21 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nThis market will resolve to \"Down\" if the official S&P 500 Index open price for S&P 500 (SPX) on October 21 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nE.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day.\n\nIf the two prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding.\n\nIf SPX does not trade at all during the regular session, the market will resolve 50-50.\n\nIf either of the relevant days are shortened (for example, due to a market holiday schedule), the official open/close price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf the previous trading day has no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Open/Close values published by the WSJ under \"Historical Prices\".\n\nUS: https://www.wsj.com/market-data/stocks\nEMEA: https://www.wsj.com/market-data/stocks/emea\nASIA: https://www.wsj.com/market-data/stocks/asia",
"resolutionSource": "https://www.wsj.com/market-data/stocks",
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"closed": false,
"acceptingOrders": true,
"updatedAt": "2026-10-21T05:42:57.094214Z",
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"outcomes": "[\"Up\", \"Down\"]",
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"midpointLabel": "Bid/ask midpoint estimate",
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"sourceTime": "2026-10-21T05:44:37.721Z",
"checkedAt": "2026-10-21T05:45:18.413Z",
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"checkedAt": "2026-10-21T05:45:18.464Z",
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}
],
"horizon": "21 October SPX opening versus20 October close, not closing direction.",
"assessment": "Opening-up71/89cents has18-cent spread and124.82best depth: weak/unusable, and a different horizon from close. Do not add probabilities.",
"readerRelevant": false,
"qualityReview": [
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"status": "weak_wide_spread",
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"limitation": "Single timestamped order-book observation; no guaranteed execution, calibrated forecast or stock trade-success probability."
},
{
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"limitation": "Single timestamped order-book observation; no guaranteed execution, calibrated forecast or stock trade-success probability."
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"comparison": {
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"id": "5778641",
"question": "Will Hilton (HLT) beat quarterly earnings?",
"instrument": null,
"sourceUrl": "https://polymarket.com/event/hlt-quarterly-earnings-nongaap-eps-10-27-2026-2pt38",
"rules": "As of market creation, Hilton is estimated to release earnings on October 27, 2026. The Street consensus estimate for Hilton’s non-GAAP EPS for the relevant quarter is $2.38 as of market creation. This market will resolve to \"Yes\" if Hilton reports non-GAAP EPS greater than $2.38 for the relevant quarter in its next quarterly earnings release. Otherwise, it will resolve to \"No.\" The resolution source will be the non-GAAP EPS listed in the company’s official earnings documents.\n\nIf Hilton releases earnings without non-GAAP EPS, then the market will resolve according to the non-GAAP EPS figure reported by SeekingAlpha. If no such figure is published within 96h of market close (4:00:00pm ET) on the day earnings are announced, the market will resolve according to the GAAP EPS listed in the company’s official earnings documents; or, if not published there, according to the GAAP EPS provided by SeekingAlpha. If no GAAP EPS number is available from either source at that time, the market will resolve to “No.” (For the purposes of this market, GAAP EPS refers to diluted GAAP EPS, unless it is not published, in which case it refers to basic GAAP EPS.)\n\nIf the company does not release earnings within 45 calendar days of the estimated earnings date, this market will resolve to “No.”\n\nNote: Subsequent restatements, corrections, or revisions made to the initially announced non-GAAP EPS figure will not qualify for resolution, except in the case of obvious and immediate mistakes (e.g., fat finger errors, as with Lyft's (LYFT) earnings release in February 2024).\nNote: The strike prices used in these markets reflect the selected street consensus estimate for non-GAAP EPS as of market creation.\nNote: All figures will be rounded to the nearest cent using standard rounding.\nNote: For the purposes of this market, IFRS EPS will be treated as GAAP EPS.\nNote: If multiple versions of non-GAAP EPS are published, the market will resolve according to the primary headline non-GAAP EPS number, which is typically presented on a diluted basis. If diluted is not published, then basic non-GAAP EPS will qualify.\nNote: All figures are expressed in USD, unless otherwise indicated.\nNote: For primarily internationally listed companies, this market refers specifically to the shares traded in the United States on U.S. stock exchanges such as the NYSE or Nasdaq. In cases where the company trades in the U.S. through an American Depositary Receipt (ADR) or American Depositary Share (ADS), this market will refer to the ADR/ADS.\n",
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"deadline": "2026-10-27T13:00:00Z",
"active": true,
"closed": false,
"acceptingOrders": true,
"updatedAt": "2026-10-21T05:30:58.364897Z",
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"midpointLabel": "Bid/ask midpoint estimate",
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"sourceTime": "2026-10-21T05:42:09.994Z",
"checkedAt": "2026-10-21T05:45:18.509Z",
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"sourceTime": "2026-10-21T05:42:09.994Z",
"checkedAt": "2026-10-21T05:45:18.549Z",
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"assessment": "79.5%non-GAAP earnings-beat midpoint estimate,79/80cents,550best-depth shares but only99.38reported24hvolume; low participation weakens reliability. Beat probability is not stock-rise or trade-win probability.",
"readerRelevant": false,
"qualityReview": [
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"status": "weak_low_volume",
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"priorSourceTime": "2026-10-20T04:53:57.175Z",
"priorMidpoint": 0.675,
"currentMidpoint": 0.795,
"changePercentagePoints": 12,
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}
}
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"question": "Will the Fed decrease interest rates by 50+ bps after the October 2026 meeting?",
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"rules": "The FED interest rates are defined in this market by the upper bound of the target federal funds range. The decisions on the target federal funds range are made by the Federal Open Market Committee (FOMC) meetings.\n\nThis market will resolve to the amount of basis points the upper bound of the target federal funds rate is changed by versus the level it was prior to the Federal Reserve's October 2026 meeting.\n\nIf the target federal funds rate is changed to a level not expressed in the displayed options, the change will be rounded up to the nearest 25 and will resolve to the relevant bracket. (e.g. if there's a cut/increase of 12.5 bps it will be considered to be 25 bps)\n\nThe resolution source for this market is the FOMC’s statement after its meeting scheduled for October 27-28, 2026 according to the official calendar: https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm.\n\nThe level and change of the target federal funds rate is also published at the official website of the Federal Reserve at https://www.federalreserve.gov/monetarypolicy/openmarket.htm.\n\nThis market may resolve as soon as the FOMC’s statement for their October meeting with relevant data is issued. If no statement is released by the end date of the next scheduled meeting, this market will resolve to the \"No change\" bracket.",
"resolutionSource": "https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm",
"deadline": "2026-10-29T03:59:00Z",
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"closed": false,
"acceptingOrders": true,
"updatedAt": "2026-10-21T05:42:57.094214Z",
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{
"price": "0.951",
"size": "5000"
},
{
"price": "0.952",
"size": "1105"
},
{
"price": "0.961",
"size": "5000"
},
{
"price": "0.966",
"size": "500"
},
{
"price": "0.967",
"size": "1000"
},
{
"price": "0.969",
"size": "40"
},
{
"price": "0.97",
"size": "664.2"
},
{
"price": "0.971",
"size": "5000"
},
{
"price": "0.972",
"size": "40"
},
{
"price": "0.973",
"size": "80"
},
{
"price": "0.975",
"size": "16100"
},
{
"price": "0.98",
"size": "10200"
},
{
"price": "0.982",
"size": "3000"
},
{
"price": "0.983",
"size": "837.2"
},
{
"price": "0.985",
"size": "25"
},
{
"price": "0.987",
"size": "100"
},
{
"price": "0.988",
"size": "100"
},
{
"price": "0.99",
"size": "2000"
},
{
"price": "0.991",
"size": "146143.32"
},
{
"price": "0.992",
"size": "11500"
},
{
"price": "0.993",
"size": "1774.1"
},
{
"price": "0.994",
"size": "100447.1"
},
{
"price": "0.995",
"size": "131829.92"
},
{
"price": "0.996",
"size": "1069729.17"
}
],
"asks": [
{
"price": "0.999",
"size": "328362.06"
},
{
"price": "0.998",
"size": "2611133.69"
},
{
"price": "0.997",
"size": "1515270.6"
}
],
"min_order_size": "5",
"tick_size": "0.001",
"neg_risk": true,
"last_trade_price": "0.003"
}
}
],
"quoteAudit": [
{
"outcome": "Yes",
"token": "18246296022868501258060085368606280205967114341141276439803424448463050819498",
"bid": 0.003,
"ask": 0.004,
"spread": 0.001,
"midpoint": 0.0035,
"depth": 2584999.77,
"sourceTime": "2026-10-21T05:49:56.917Z",
"checkedAt": "2026-10-21T05:50:02.199Z",
"lastTradeUsed": false
},
{
"outcome": "No",
"token": "41864497411878191766967581422432961750808440991174085516384293402629587721839",
"bid": 0.996,
"ask": 0.997,
"spread": 0.0010000000000000009,
"midpoint": 0.9964999999999999,
"depth": 2584999.77,
"sourceTime": "2026-10-21T05:49:56.917Z",
"checkedAt": "2026-10-21T05:50:02.257Z",
"lastTradeUsed": false
}
],
"comparison": {
"comparisonCheckedAt": "2026-10-20T05:43:24.811Z",
"priorSourceTime": "2026-10-20T05:43:17.383Z",
"priorMidpoint": 0.0035,
"currentMidpoint": 0.0035,
"changePercentagePoints": 0,
"limitation": "Matching contract/outcome only. In particular prior Hilton book was stale and23cents wide; the change does not establish a credible probability trend."
},
"assessment": "Exact October27–28FOMC target upper-bound change contract; not today’s index direction or a stock trade success probability. Individual outcomes are not added together. No allocation or regime effect assumed.",
"readerRelevant": false,
"qualityReview": [
{
"outcome": "Yes",
"status": "observed_current_book",
"sourceAgeSeconds": 5.282,
"limitation": "Single timestamped order-book observation; no guaranteed execution, calibrated forecast or stock trade-success probability."
},
{
"outcome": "No",
"status": "observed_current_book",
"sourceAgeSeconds": 5.34,
"limitation": "Single timestamped order-book observation; no guaranteed execution, calibrated forecast or stock trade-success probability."
}
]
}
],
"nasdaq100": "No suitable exact Nasdaq-100 contract established in bounded public search; Nasdaq Composite,QQQ andSPY were not substituted.",
"sourcesChecked": [
{
"query": "S&P 500 SPX October 21",
"url": "https://gamma-api.polymarket.com/public-search?q=S%26P%20500%20SPX%20October%2021",
"http": 200,
"coverage": {
"events": 3,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Nasdaq-100 October 21",
"url": "https://gamma-api.polymarket.com/public-search?q=Nasdaq-100%20October%2021",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Federal Reserve October 2126",
"url": "https://gamma-api.polymarket.com/public-search?q=Federal%20Reserve%20October%202126",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "US inflation October 2126",
"url": "https://gamma-api.polymarket.com/public-search?q=US%20inflation%20October%202126",
"http": 200,
"coverage": {
"events": 2,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Adobe earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Adobe%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Analog Devices earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Analog%20Devices%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Autodesk earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Autodesk%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Amgen earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Amgen%20earnings",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "DoorDash earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=DoorDash%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Travelers earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Travelers%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Amazon earnings October 2126",
"url": "https://gamma-api.polymarket.com/public-search?q=Amazon%20earnings%20October%202126",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Duke Energy earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Duke%20Energy%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Accenture earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Accenture%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Hilton earnings October 2126",
"url": "https://gamma-api.polymarket.com/public-search?q=Hilton%20earnings%20October%202126",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "American Tower earnings October 2126",
"url": "https://gamma-api.polymarket.com/public-search?q=American%20Tower%20earnings%20October%202126",
"http": 200,
"coverage": {
"events": 4,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Automatic Data Processing earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Automatic%20Data%20Processing%20earnings",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Nokia earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Nokia%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Freeport McMoRan earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Freeport%20McMoRan%20earnings",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Medtronic earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=Medtronic%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "3M earnings",
"url": "https://gamma-api.polymarket.com/public-search?q=3M%20earnings",
"http": 200,
"coverage": {
"events": 5,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Intuitive Surgical earnings October2026",
"url": "https://gamma-api.polymarket.com/public-search?q=Intuitive%20Surgical%20earnings%20October2026",
"http": 200,
"coverage": {
"events": 2,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "Fed October28 2026 interest rate decision",
"url": "https://gamma-api.polymarket.com/public-search?q=Fed%20October28%202026%20interest%20rate%20decision",
"http": 200,
"coverage": {
"events": 1,
"hasMore": false,
"bounded": "First public-search page; not exhaustive"
}
},
{
"query": "US housing starts September2026",
"url": "https://gamma-api.polymarket.com/public-search?q=US%20housing%20starts%20September2026",
"http": 200,
"coverage": {
"events": 5,
"hasMore": true,
"bounded": "First public-search page; not exhaustive"
}
}
],
"regimeContext": "SPXclose-up69.5%is limited supportive context for that exact horizon; open contractwide, no exactNasdaq100market established. No broad regime can be established from odds alone. Actual audited index/sector evidence remains independent.",
"decisionImpact": "SPX21October close69/70 bidask midpoint69.5% is a distinct forward contract; open71/89 spread is unusable. HLT79/80 midpoint79.5% has low99.38 24hvolume and mismatched oldwidebook, so no credible odds trend/automatic trade-success inference. Fed28October outcomes are not added together. No suitableNasdaq100 contract substituted; context changes no technical trigger or units.",
"featuredEarningsCoverage": {
"symbols": [
"NOK.US",
"ADP.US",
"FCX.US",
"MDT.US",
"MMM.US"
],
"status": "No suitable exact unresolved issuer earnings contract established in bounded public name searches. First pages are not exhaustive; unrelated names and resolved contracts excluded."
},
"alexHandoff": {
"sourceFile": "work/polymarket-2026-10-21.json",
"priceCutoff": "2026-10-20T20:00:00Z",
"technicalIndependence": "Ten actual completed-bar chart reviews retain their independent triggers, invalidations and alternatives. Odds do not qualify waves, resolve subdivisions or alter scores.",
"context": "SPX closing context is supportive only over its exact21October horizon; independently audited charts/triggers unchanged. Hilton low participation cannot strengthen the stock thesis. Full Sam review retained separately."
},
"samReviewedAt": "2026-10-21T05:56:02.290Z"
}