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Aftermath

After an unplanned insider sale, over the next month

An insider's sale outside a pre-arranged 10b5-1 plan; entry the session after its SEC filing. Each stock's median gain after its own events of this kind in the past 5 years, from the close of the session the event was known. Updated .

The typical S&P 500 stock gained +3.36% over the next month after an unplanned insider sale (half of them between -3.60% and +9.58%), against +0.86% on any day.

Latest unplanned insider sales, last few sessions

EntryStockIts median, 1 monthConfidenceRankUpEvents
Oct 1 COST Costco Caton Frates (Sr. Executive Vice President), $733,328 +0.12% Low #28 of 33 50% 10
Sep 30 OKLO John Hanson (Chief of Staff), $41,129 -7.32% Medium #27 of 33 39% 18

Best after an unplanned insider sale

#StockMedian (likely range)ConfidenceAverageUpvs SPYWorst · bestEvents
1 COHR Coherent Corp. +24.42%+9.0 to +27.5 Low +19.04% 100% +19.82% +2% · +27% 8
2 WULF meme +18.53%+4.5 to +24.8 Low +18.13% 100% +15.71% +5% · +31% 4
3 WDC Western Digital +9.58%+7.9 to +18.2 Low +13.06% 89% +11.01% -6% · +29% 9
4 META Meta Platforms +11.69%-7.8 to +11.7 Low +8.21% 80% +8.67% -8% · +22% 5
5 CRWD CrowdStrike +7.11%-0.1 to +16.0 Medium +8.17% 68% +6.21% -9% · +43% 22
6 AVGO Broadcom +8.23%-4.2 to +10.4 Low +7.11% 63% +2.82% -5% · +25% 19
7 AMD Advanced Micro Devices +14.83%-8.3 to +20.0 Low +11.92% 80% +14.91% -8% · +31% 5
8 UPST meme +13.65%-10.9 to +15.5 Low +4.22% 64% +11.08% -11% · +15% 11
9 MU Micron Technology +12.24%+1.7 to +35.5 Medium +19.46% 92% +11.19% -9% · +73% 12
10 LQDA meme +7.75%+3.9 to +19.9 Medium +8.30% 75% +2.61% -25% · +48% 16
11 CVNA Carvana +12.46%+1.3 to +29.1 Low +17.50% 89% +11.92% 0% · +41% 9
12 NVDA Nvidia +3.67%+2.9 to +5.3 Low +5.42% 89% +2.81% 0% · +17% 9
13 STX Seagate Technology +6.09%+0.6 to +8.8 Medium +1.22% 71% +4.74% -24% · +39% 17
14 ONDS meme +34.28%-15.2 to +34.3 Low +14.72% 71% +33.54% -33% · +34% 7
15 LLY Lilly (Eli) +4.00%-3.6 to +12.0 Low +5.24% 73% +2.70% -4% · +21% 11
16 PLTR Palantir Technologies +9.96%-21.5 to +15.4 Low -0.46% 62% +12.82% -21% · +15% 13
17 SNDK Sandisk +12.41%-9.9 to +29.6 Low +17.42% 50% +13.68% -10% · +55% 4
18 HOOD Robinhood Markets +10.79%-6.5 to +35.4 Low +12.80% 60% +10.29% -14% · +38% 5
19 LITE Lumentum +8.60%-5.4 to +38.1 Low +14.46% 67% +10.95% -11% · +47% 6
20 GME meme +4.98%-12.9 to +17.3 Low +4.40% 71% -4.86% -14% · +17% 7
21 APP AppLovin +5.24%-6.7 to +28.5 Low +8.49% 75% +2.34% -29% · +28% 12
22 NBIS meme +12.19%-24.8 to +62.1 Low +23.76% 78% +9.24% -25% · +62% 9
23 RKLB meme +6.60%-16.1 to +40.9 Low +16.41% 58% +5.84% -30% · +82% 12
24 INTC Intel +3.36%-10.7 to +8.4 Low +0.37% 67% -1.25% -11% · +8% 3
25 APLD meme -3.11%-21.3 to +96.3 Low +22.45% 45% -2.17% -21% · +96% 11

Worst after an unplanned insider sale

#StockMedian (likely range)ConfidenceAverageUpvs SPYWorst · bestEvents
1 FICO Fair Isaac -9.49%-16.6 to -7.6 Low -7.89% 25% -9.90% -17% · +4% 4
2 MSFT Microsoft -4.19%-8.1 to -1.4 Low -4.57% 12% -5.78% -10% · 0% 8
3 CRWV meme -6.51%-7.2 to +0.8 Medium -0.85% 40% -7.84% -42% · +58% 78
4 GOOG Alphabet Inc. (Class … -3.67%-12.0 to -2.9 Low -4.35% 25% -6.40% -12% · +2% 4
5 BA Boeing -10.40%-14.5 to +2.8 Low -8.12% 25% -8.45% -14% · +3% 4
6 HD Home Depot (The) -10.34%-11.0 to +6.2 Low -4.98% 29% -8.65% -11% · +10% 7
7 COST Costco +0.12%-3.7 to +1.9 Low +0.80% 50% -1.79% -7% · +15% 10
8 AAPL Apple Inc. +0.02%-3.9 to +0.4 Low +1.84% 50% +0.32% -4% · +11% 4
9 OKLO meme -7.32%-16.4 to +6.1 Medium +2.23% 39% -8.93% -27% · +87% 18
10 AEO meme -9.42%-11.7 to +7.6 Low -7.67% 36% -12.34% -26% · +9% 14
11 NOW ServiceNow -3.60%-6.7 to -2.1 Low -0.23% 14% -7.39% -17% · +40% 7
12 NFLX Netflix -6.90%-11.8 to +11.4 Low -3.28% 29% -7.41% -12% · +15% 7
13 ORCL Oracle Corporation -11.08%-29.3 to -0.3 Low -10.53% 25% -11.94% -29% · +4% 8
14 UBER Uber -0.46%-9.8 to +2.9 Low -3.00% 40% -4.85% -12% · +4% 5
15 WMT Walmart +2.11%-2.7 to +3.4 Medium +0.10% 55% +1.47% -7% · +4% 11
16 TTD meme -9.48%-25.5 to +11.4 Low -7.86% 33% -7.78% -25% · +11% 3
17 AMAT Applied Materials -3.45%-8.5 to +13.6 Low +4.08% 46% +1.53% -14% · +40% 13
18 TSLA Tesla, Inc. -0.55%-13.4 to +3.5 Low +2.28% 40% -1.95% -13% · +25% 5
19 BE Bloom Energy -4.22%-18.4 to +28.6 Medium +5.54% 39% +0.46% -31% · +64% 18
20 BB meme -11.05%-21.4 to +72.8 Low +11.27% 29% -11.20% -21% · +73% 14
21 CRDO meme -1.21%-10.4 to +19.5 Low +19.55% 47% -2.61% -15% · +86% 15
22 TTWO Take-Two Interactive +2.89%-7.5 to +4.7 Low +1.95% 57% -0.13% -11% · +15% 7
23 APLD meme -3.11%-21.3 to +96.3 Low +22.45% 45% -2.17% -21% · +96% 11
24 INTC Intel +3.36%-10.7 to +8.4 Low +0.37% 67% -1.25% -11% · +8% 3
25 RKLB meme +6.60%-16.1 to +40.9 Low +16.41% 58% +5.84% -30% · +82% 12

Stocks with at least 3 independent periods, ordered on an evidence-weighted median: each stock's median is pulled toward the S&P 500 typical value in proportion to its uncertainty, so a lucky handful of events cannot top the list. Confidence counts independent holding periods (overlapping ones count once): High 20+, Medium 8+, Low 3+. Median and average gain over the next month from the entry close; Up = share of events followed by a gain; vs SPY = median gain minus SPY over the same sessions. Ranks on the stock pages place each stock among the S&P 500 stocks. Small samples are noisy, and the past does not repeat on schedule. Not advice.