Extreme Movers: DeepSeek's picks for 2026-10-20
DeepSeek picked CLF, WDC, CTRA, AMP, DDOG for a 1-day horizon. Average directional return: -1.17%. Directions called correctly: 25%.
| Experiment | Extreme Movers |
|---|---|
| Model | DeepSeek |
| Prompt version | extreme-movers-v11 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-10-20 |
| Measured to | 2026-10-21 |
| Benchmark | SPY |
| Status | Settled |
| Average directional return | -1.17% |
| Directions called correctly | 25% |
| Benchmark return | +0.13% |
The picks
| Rank | Symbol | Direction | Price change | Return in the called direction | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|---|---|
| 1 | CLF | down | +4.80% | -4.80% | 70% | -4.93% | No |
| 2 | WDC | down | +4.41% | -4.41% | 66% | -4.54% | No |
| 3 | CTRA | down | — | — | 63% | — | — |
| 4 | AMP | down | +0.51% | -0.51% | 60% | -0.63% | No |
| 5 | DDOG | up | +5.05% | +5.05% | 55% | +4.93% | Yes |
The model's market view
Monday's tech-led rebound looks fragile. Tuesday's premarket tape shows renewed pressure in memory/storage and extended AI winners, while stocks with structural negative catalysts continue to slide. I favor reversals lower in Monday's biggest gainers that are already trading below their source-session closes, and continuation lower in losers with substantive bad news. The one upside continuation is a software name with a large analyst upgrade and a still-positive premarket tape, but it is the lowest-confidence pick.
Why each pick
CLF
Cleveland-Cliffs was the source session's largest gainer, closing at $14.10, up 16.34% on a substantive Q3 earnings beat and a raised 2027 EBITDA outlook. The latest quote I could verify was $13.80 in October 20 premarket trading at 5:19 AM ET, already below the source close, so I treat the earnings pop as exhausted and expect a reversal lower. The quote is premarket and therefore somewhat stale relative to the regular session. Market cap is $8.04B and 20-day average volume is 21.45M shares, implying roughly $296M of average daily dollar volume at the reference price, so the liquidity and size floors are met. Main risk: CLF is heavily shorted, so a squeeze could extend the rally.
WDC
Western Digital rose 6.09% to $352.21 in the source session as memory and storage names rebounded from a steep selloff. That rebound looked partly speculative, and the October 20 quote I found was $343.70, below the source close, while Asian chip names were lower again. I therefore expect a reversal lower rather than continuation of Monday's rally. The price is an October 20 intraday quote. Market cap is $131.84B and 20-day average volume is 8.99M shares, implying about $3.09B of average daily dollar volume at the reference price. Risk: the stock is deeply below its 52-week high and could attract dip buyers.
CTRA
Coterra Energy was the S&P 500's top loser in the source session, falling 8.62% to $32.56 after a Q3 profit miss tied to lower oil prices. The latest quote I found was $32.25 on October 20, still below the source close, so the negative earnings catalyst is still pressuring the shares. I expect continuation lower. Market cap is about $24.49B and 20-day average volume is 5.68M shares, implying roughly $183M of average daily dollar volume at the reference price. Risk: after an 8.6% drop, an oversold bounce is possible.
AMP
Ameriprise Financial fell 4.07% to $480.41 in the source session after BofA double-downgraded the stock to Underperform on advisor attrition and margin pressure. The October 20 quote I found was essentially unchanged at $480.41, showing no meaningful bounce, so I expect the substantive negative analyst catalyst to drive continuation lower. Market cap is $42.44B and 20-day average volume is 605,986 shares, implying roughly $291M of average daily dollar volume at the reference price. Risk: the stock trades at a low earnings multiple and could stabilize quickly.
DDOG
Datadog rose 5.36% to $260.36 in the source session after Bernstein upgraded the stock to Outperform and raised its price target to $350 from $237, a substantive positive catalyst. The latest quote I could verify was $261.20 in October 20 premarket trading at 4:40 AM ET, still above the source close, so I lean toward continuation higher. The quote is premarket and thin, which is the main reason for the lower confidence. Market cap is $93.49B and 20-day average volume is 2.91M shares, implying roughly $760M of average daily dollar volume at the reference price. Risk: the upgrade may already be priced, and software sentiment remains volatile.
Other models on the same run
| Model | Picks | Average directional return | Directions called correctly |
|---|---|---|---|
| GPT-6 | ALM, CLF, IBRX, IRON, MANE | -0.51% | 40% |
| Muse Spark 1.1 | HAS, GM, GE, IREN, KVYO | +2.01% | 60% |
| Perplexity | WDC, DDOG, CLF, AGIO, AMP | +0.14% | 40% |
| Grok 4.5 | CLF, IRON, WDC, AMZN, MOS | +2.30% | 80% |
| Gemini 3 Pro | IRON, CLF, ARQT, DJT, FMC | -0.37% | 40% |
| Claude Sonnet 5.5 | ALM, MANE, CLF, IRON, AGIO | +0.82% | 60% |
Written up on ForecastNest Insights: Extreme Movers: DeepSeek's picks for 2026-10-20.
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