SPX sessions closed in positive gamma, with the net-gamma percentile 80 and above, on housing and durables days

175 sessions · the archive filtered by the dealer book · all sessions · the calendar

175 of 1,111 sessions match. Of them 100% closed above the flip (archive 84%), 70% held the expected-hold band (archive 60%), mean open-to-close move 0.53% (archive 0.60%).

Every row is a finished SPX session and links to its page, where the same numbers stand with the day's events and a free minute-by-minute replay. The filters are the closing measurements those pages print: the zero-gamma flip against the close and the open, the net-gamma percentile, how often the flip was crossed, whether the expected-hold band held, and the calendar event the day carried. The shares above are counts over the matched days next to the same counts over the whole archive; a share that matches the archive is a base rate, not a pattern.

SessionCloseMoveFlipvs flipPctlCrossBandEvents
2026-09-257,743.25+0.42%7,650.2+93.1851heldHousing, UMich
2026-08-267,675.95+0.13%7,663.1+12.8993brokePCE, Housing, GDP, VIX settlement, EIA, Auctions
2026-08-257,677.30-0.05%7,621.5+55.8980heldHousing, Confidence, Auctions
2026-08-037,600.47+1.06%7,452.4+148.11002brokeISM, Housing, Fed, Refunding
2026-07-277,412.22-0.78%7,363.7+48.51000heldHousing, Auctions
2026-07-247,410.80-0.01%7,361.6+49.2988heldHousing
2026-07-027,479.37-0.35%7,406.2+73.2950heldNFP, Housing, Claims, EIA
2026-06-257,355.80-0.86%7,293.6+62.2940heldPCE, Housing, GDP, Claims, EIA, Auctions
2026-06-247,358.75-0.22%7,293.2+65.6960brokeHousing, VIX settlement, EIA, Auctions, Fed
2026-06-037,554.39-0.60%7,542.6+11.8970heldHousing, ISM, EIA, Fed
2026-06-017,599.70+0.45%7,506.9+92.81000heldISM, Housing
2026-05-287,563.45+0.59%7,455.3+108.11000heldPCE, Housing, GDP, Claims, EIA, Auctions
2026-05-217,445.56+0.62%7,293.8+151.81000heldHousing, Claims, EIA
2026-05-077,336.90-0.48%7,303.3+33.61000heldClaims, Housing, EIA
2026-05-057,259.52+0.26%7,247.3+12.210012brokeHousing, ISM, JOLTS
2026-05-047,200.92-0.26%7,195.2+5.710018brokeHousing, Fed
2026-04-297,136.05+0.11%7,120.2+15.91004brokeHousing, Refunding, VIX settlement, EIA, FOMC
2026-04-106,816.69-0.31%6,769.2+47.5980heldCPI, Housing, UMich
2026-03-236,582.06-0.30%6,487.0+95.1960heldHousing
2026-03-196,606.92+0.61%6,495.7+111.2980heldHousing, Claims, EIA, Fed
2026-03-186,624.85-0.98%6,572.1+52.8968brokeHousing, PPI, VIX settlement, EIA, FOMC
2026-03-136,631.49-1.18%6,574.8+56.7960heldPCE, Housing, GDP, JOLTS, UMich
2026-03-126,673.29-0.66%6,607.4+65.91004heldHousing, Claims, EIA, Auctions
2026-02-276,879.27+0.43%6,745.2+134.1950heldPPI, Housing, Opex
2026-02-206,909.09+1.06%6,805.7+103.41001heldPCE, GDP, UMich, Housing, Opex
2026-02-186,880.55+0.46%6,795.1+85.4910heldHousing, VIX settlement, Auctions
2026-01-296,967.37-0.31%6,814.6+152.8850brokeHousing, Claims, EIA, Auctions
2026-01-266,950.70+0.37%6,881.4+69.3991heldHousing, Auctions
2026-01-216,875.10+0.73%6,858.4+16.71007brokeVIX settlement, Housing, Auctions
2026-01-136,963.52-0.27%6,920.0+43.5970heldCPI, Housing, Auctions
2026-01-096,966.60+0.49%6,899.1+67.5962heldNFP, Housing, UMich, Fed
2026-01-076,921.37-0.33%6,903.3+18.1931heldHousing, VIX settlement, JOLTS, EIA
2025-12-236,909.75+0.42%6,839.1+70.61000heldPCE, Housing, GDP, Auctions
2025-12-046,855.99-0.10%6,816.6+39.4940heldHousing, Claims, EIA
2025-11-266,812.45+0.26%6,769.8+42.61000heldHousing, Claims, VIX settlement, EIA, Auctions, Fed
2025-11-186,617.56-0.33%6,544.1+73.5880heldHousing
2025-11-176,672.66-0.52%6,603.1+69.6870brokeHousing
2025-09-256,604.25+0.08%6,528.2+76.11000heldHousing, GDP, Claims, EIA, Auctions
2025-09-246,637.55-0.44%6,575.2+62.4880heldHousing, VIX settlement, EIA, Auctions
2025-09-176,600.65-0.18%6,466.4+134.3840heldHousing, VIX settlement, EIA, FOMC
2025-09-026,415.17+0.60%6,307.1+108.11000heldISM, Housing
2025-08-266,466.07+0.50%6,395.6+70.5930heldHousing, Confidence, Auctions
2025-08-256,439.75-0.23%6,429.5+10.3990heldHousing
2025-08-196,411.52-0.53%6,400.2+11.3990heldHousing
2025-08-046,329.57+0.78%6,238.3+91.31000heldHousing, Fed
2025-07-256,389.17+0.28%6,312.0+77.21000heldHousing, UMich
2025-07-186,296.72-0.19%6,257.3+39.4980heldHousing, Opex
2025-07-036,277.30+0.42%6,229.2+48.1910heldNFP, Housing, Claims, ISM, EIA
2025-07-016,198.07+0.15%6,111.8+86.3990heldFed, ISM, JOLTS, Housing
2025-06-266,141.37+0.44%6,057.0+84.41000heldHousing, GDP, Claims, EIA, Auctions
2025-06-256,092.50-0.21%6,025.1+67.4990heldHousing, VIX settlement, Fed, EIA, Auctions
2025-06-185,980.50-0.10%5,881.0+99.59516brokeHousing, Claims, VIX settlement, EIA, FOMC
2025-06-035,970.55+0.49%5,859.7+110.91000heldHousing, VIX settlement, JOLTS
2025-06-025,935.80+0.69%5,784.7+151.11000heldISM, Housing, Fed
2025-05-275,921.17+0.80%5,823.0+98.21000heldHousing, Confidence, Auctions
2025-05-235,802.87+0.50%5,668.2+134.71000heldHousing, UMich
2025-05-165,958.37+0.64%5,823.9+134.51000heldHousing, Opex
2025-05-025,687.32+0.43%5,484.4+202.9998brokeNFP, Housing
2025-05-015,602.91-0.30%5,446.6+156.31000brokeClaims, ISM, Housing, EIA
2025-04-245,484.65+1.96%5,220.4+264.31000heldHousing, Claims, EIA, Auctions
2025-04-235,377.07-0.77%5,307.0+70.1940heldHousing, VIX settlement, EIA, Auctions, Fed
2025-04-175,282.85-0.33%5,161.1+121.8990heldHousing, Claims, EIA, Fed, Opex
2025-04-025,672.04+1.79%5,530.2+141.81001heldHousing, VIX settlement, EIA
2025-03-265,712.15-1.12%5,706.4+5.8990brokeHousing, VIX settlement, EIA, Auctions
2025-03-255,776.52-0.02%5,732.6+43.91000heldHousing, Confidence, Auctions
2025-03-185,614.57-0.60%5,506.4+108.2890heldHousing, VIX settlement, Auctions
2025-02-196,144.07+0.47%6,081.9+62.21000heldHousing, VIX settlement, Auctions
2025-02-046,037.37+0.70%5,988.7+48.7940heldHousing, JOLTS
2025-01-286,067.06+0.70%5,975.3+91.8950heldHousing, Confidence, Auctions
2025-01-276,012.80+0.47%5,908.0+104.8811heldHousing, Auctions
2025-01-175,996.74+0.17%5,948.5+48.21000heldHousing, Opex
2025-01-065,974.64-0.20%5,945.3+29.31000heldHousing, ISM, Auctions
2024-12-235,972.75+0.52%5,892.0+80.8820heldHousing, Auctions, Fed
2024-12-046,086.15+0.32%6,033.5+52.61002heldHousing, VIX settlement, ISM, EIA
2024-12-026,047.52+0.05%6,007.2+40.3990heldISM, Housing
2024-11-275,997.97-0.24%5,960.4+37.6981heldPCE, Housing, GDP, Claims, VIX settlement, EIA, Auctions
2024-11-266,021.37+0.34%5,957.0+64.41001heldHousing, Confidence, Auctions
2024-11-195,916.82+0.95%5,882.2+34.6891brokeHousing
2024-11-045,713.45-0.30%5,679.4+34.1920heldHousing, Auctions
2024-11-015,729.05-0.04%5,696.2+32.91000heldNFP, ISM, Housing
2024-10-255,808.12-0.56%5,797.5+10.6874heldHousing, UMich
2024-10-245,809.82-0.06%5,753.3+56.5991heldHousing, Claims, EIA
2024-10-185,864.02+0.18%5,818.2+45.81000heldHousing, Opex
2024-10-035,700.27+0.06%5,646.6+53.71000heldHousing, Claims, ISM, EIA
2024-10-015,707.97-0.75%5,693.8+14.2950brokeISM, JOLTS, Housing
2024-09-265,746.17-0.25%5,717.8+28.41001heldHousing, GDP, Claims, EIA, Auctions
2024-09-255,721.32-0.33%5,694.0+27.31000heldHousing, VIX settlement, EIA, Auctions
2024-09-045,520.47+0.15%5,473.2+47.3881heldHousing, VIX settlement, JOLTS
2024-09-035,527.82-1.55%5,512.5+15.3991brokeISM, Housing
2024-08-265,616.92-0.49%5,586.9+30.0971heldHousing
2024-08-235,634.17+0.54%5,574.8+59.41006heldHousing, UMich
2024-08-165,554.05+0.50%5,516.7+37.4980heldHousing, Opex
2024-08-015,445.16-1.80%5,369.4+75.8906brokeClaims, ISM, Housing, EIA
2024-07-255,399.37-0.56%5,393.8+5.61006brokeHousing, GDP, Claims, EIA, Auctions
2024-07-245,427.81-1.46%5,422.1+5.7873brokeHousing, VIX settlement, EIA, Auctions
2024-07-175,589.10-0.40%5,540.4+48.71001heldHousing, VIX settlement, EIA, Auctions
2024-07-015,474.70-0.02%5,424.1+50.61000heldISM, Housing
2024-06-275,481.85+0.08%5,442.1+39.81000heldHousing, GDP, Claims, EIA, Auctions
2024-06-265,478.66+0.39%5,426.3+52.4920heldHousing, VIX settlement, EIA, Auctions, Fed
2024-06-205,472.82-0.43%5,454.1+18.7924heldHousing, Claims, EIA
2024-06-045,290.62+0.34%5,223.8+66.81000heldHousing, JOLTS
2024-06-035,281.82-0.25%5,218.3+63.5951heldISM, Housing, Halts
2024-05-245,304.00+0.34%5,243.6+60.41001heldHousing, UMich
2024-05-235,267.81-1.26%5,241.0+26.8971heldHousing, Claims, EIA
2024-05-165,297.22-0.27%5,281.2+16.0990heldHousing, Claims, EIA
2024-05-145,247.92+0.43%5,188.8+59.11000heldHousing, PPI
2024-05-025,063.30+0.15%4,990.5+72.8940heldHousing, Claims, EIA
2024-05-015,020.27-0.22%5,008.0+12.39819brokeRefunding, VIX settlement, ISM, JOLTS, Housing, EIA, FOMC
2024-04-245,072.77-0.13%5,018.7+54.1950heldHousing, VIX settlement, EIA, Auctions
2024-04-235,070.45+0.81%4,966.1+104.3980heldHousing, Retail sales
2024-04-165,052.19-0.25%4,935.5+116.7870heldHousing
2024-04-025,206.17+0.06%5,162.4+43.8971heldHousing, JOLTS
2024-04-015,243.57-0.22%5,219.7+23.91000heldISM, Housing
2024-03-265,204.49-0.48%5,204.0+0.5900heldHousing, Confidence, Auctions
2024-03-255,219.07-0.00%5,193.8+25.3940heldHousing
2024-03-055,078.42-0.61%5,069.2+9.29132brokeHousing, ISM
2024-03-015,137.40+0.68%5,070.6+66.8850heldISM, Housing
2024-02-275,079.15+0.08%5,036.6+42.51000heldHousing, VIX settlement, Confidence, Auctions
2024-02-265,069.60-0.46%5,053.0+16.61000heldHousing, Auctions
2024-02-165,004.90-0.43%4,973.9+31.01000heldHousing, PPI, Opex
2024-02-024,959.30+0.95%4,906.2+53.1900heldNFP, Housing
2024-02-014,905.95+0.79%4,822.5+83.4960heldClaims, ISM, Housing, EIA
2024-01-254,894.47+0.18%4,853.1+41.4910heldHousing, GDP, Claims, EIA, Auctions
2024-01-184,781.45+0.53%4,728.1+53.31000heldHousing, Claims, EIA
2024-01-054,696.42+0.11%4,661.7+34.7930brokeNFP, Housing
2024-01-024,742.79-0.03%4,705.8+37.0810heldISM, Housing
2023-12-194,768.01+0.43%4,751.6+16.4880brokeHousing
2023-12-044,570.02+0.21%4,530.3+39.71001brokeHousing
2023-12-014,593.65+0.76%4,527.8+65.8950heldISM, Housing
2023-11-274,551.25-0.13%4,524.2+27.11001heldHousing, Auctions
2023-11-224,556.65-0.05%4,526.8+29.8960brokeHousing, Claims, VIX settlement, EIA
2023-11-174,513.91+0.09%4,466.2+47.7970heldGDP, Housing, Opex
2023-11-024,318.57+0.95%4,286.1+32.5990brokeHousing, Claims, EIA
2023-11-014,237.42+0.85%4,216.4+21.09511brokeRefunding, VIX settlement, ISM, JOLTS, Housing, EIA, FOMC
2023-10-254,186.77-0.99%4,164.7+22.19022brokeHousing, VIX settlement, EIA, Auctions
2023-10-184,313.90-0.94%4,295.6+18.31000brokeHousing, VIX settlement, EIA, Auctions
2023-10-044,263.76+0.57%4,199.3+64.51000heldHousing, VIX settlement, ISM, EIA
2023-09-274,274.12-0.34%4,254.6+19.59914brokeHousing, VIX settlement, EIA, Auctions
2023-09-264,274.47-0.81%4,253.7+20.89912brokeHousing, Confidence
2023-09-194,444.30+0.02%4,419.2+25.1952brokeHousing, Auctions
2023-09-054,496.90-0.33%4,490.1+6.8835brokeHousing
2023-09-014,514.42-0.48%4,484.4+30.01001brokeNFP, ISM, Housing
2023-08-234,435.60+0.75%4,357.1+78.51000heldHousing, VIX settlement, EIA, Auctions
2023-07-034,454.89+0.27%4,423.2+31.71000heldISM, Housing
2023-06-274,378.60+0.84%4,311.7+66.99510heldHousing, Confidence, Auctions, Halts
2023-06-204,389.45-0.02%4,352.3+37.1980heldHousing
2023-06-054,274.77-0.28%4,238.6+36.21000heldHousing, ISM
2023-05-234,146.99-0.66%4,134.9+12.1822brokeHousing
2023-05-124,124.30-0.42%4,079.2+45.11001heldHousing, UMich
2023-05-014,167.52+0.00%4,151.9+15.61000heldISM, Housing, Refunding
2023-04-184,155.20-0.22%4,116.4+38.8920heldHousing
2023-04-044,099.47-0.72%4,097.0+2.510012brokeHousing, JOLTS
2023-04-034,124.42+0.51%4,107.3+17.11000brokeISM, Housing
2023-03-233,948.67-0.54%3,912.3+36.4840heldHousing, Claims, EIA
2023-03-163,960.81+2.36%3,944.6+16.210010brokeHousing, Claims, EIA
2023-03-064,049.27-0.11%3,998.4+50.91000heldHousing
2023-03-013,951.47-0.14%3,908.2+43.31000heldVIX settlement, ISM, Housing, EIA
2023-02-243,969.55+0.20%3,961.2+8.410035brokePCE, Housing, UMich
2023-02-024,178.67+0.41%4,151.8+26.91000brokeHousing, Claims, EIA
2022-12-233,843.40+0.70%3,790.8+52.61000heldPCE, Housing, UMich
2022-12-054,000.12-1.06%3,998.0+2.110026brokeHousing, ISM
2022-12-014,077.89-0.19%4,019.6+58.3998heldPCE, Claims, ISM, Housing, EIA
2022-11-173,947.65+0.86%3,850.1+97.61001heldHousing, Claims, EIA
2022-11-033,721.19+0.09%3,714.1+7.1990brokeHousing, Claims, ISM, EIA
2022-10-043,790.70+1.43%3,636.0+154.71000heldHousing, JOLTS
2022-10-033,678.02+1.47%3,632.1+45.91000brokeISM, Housing
2022-09-273,646.87-1.24%3,640.5+6.4928brokeHousing, Confidence, Auctions
2022-09-203,855.72-0.28%3,825.5+30.29912brokeHousing, Auctions
2022-09-013,969.80+0.89%3,964.1+5.7844brokeClaims, ISM, Housing, EIA
2022-07-193,935.67+1.73%3,798.0+137.7990heldHousing
2022-07-053,831.12+1.66%3,828.2+2.99815brokeHousing
2022-07-013,822.85+0.97%3,761.8+61.010011brokeISM, Housing
2022-06-243,912.02+2.14%3,886.9+25.11008brokeHousing, UMich, Opex
2022-06-024,176.36+1.98%4,174.2+2.2816brokeHousing, Claims, EIA
2022-05-034,173.47+0.40%4,123.4+50.1886brokeHousing, JOLTS

Turn a filter into a rule

A count is where a question starts. The Lab takes a rule in plain words ("sell the 0DTE straddle at 10:00 on days that opened below the flip with the percentile under 20"), compiles it against every archived session and reports the out-of-sample verdict with day-clustered intervals. An assistant with the MCP server can page through the same archive with list_sessions and get_session.

Measurements are model output derived from public trade and quote data; they are approximations and can be wrong. Nothing here is investment advice; see the Terms.