Stock Selection: DeepSeek V3's picks for 2026-09-21
DeepSeek V3 picked AMD, INTC, ARM, MSTR, COIN for a 1-day horizon. Portfolio return vs SPY: -0.04%. Picks that beat SPY: 40%.
| Experiment | Stock Selection |
|---|---|
| Model | DeepSeek V3 |
| Prompt version | stock-selection-v8 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-09-21 |
| Measured to | 2026-09-22 |
| Benchmark | SPY |
| Status | Settled |
| Portfolio return vs SPY | -0.04% |
| Picks that beat SPY | 40% |
| Benchmark return | +0.57% |
The picks
| Rank | Symbol | Return | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|
| 1 | AMD | +0.33% | 82% | -0.25% | No |
| 2 | INTC | -0.23% | 78% | -0.80% | No |
| 3 | ARM | +4.77% | 76% | +4.20% | Yes |
| 4 | MSTR | +0.73% | 75% | +0.15% | Yes |
| 5 | COIN | -2.93% | 72% | -3.50% | No |
The model's market view
US equities are in a broad risk-on session, with the Nasdaq 100 up over 2% and the S&P 500 up roughly 1% intraday. Semiconductor stocks are leading after AMD crossed $1 trillion in market cap and Intel announced a Micro LED packaging partnership with AUO. Bitcoin's surge above $85,000 is driving crypto-linked equities sharply higher, while falling Treasury yields and a drop in crude oil provide macro tailwinds. The rally is broad and momentum-driven, favouring high-beta names over the benchmark SPY.
Why each pick
AMD
AMD surged 9.6% intraday to a record high of $613.50, becoming the latest chipmaker to reach a $1 trillion market capitalization on AI-driven demand. The catalyst is substantive: AMD's data centre GPU roadmap and the broader AI infrastructure buildout are translating into concrete revenue momentum. As a high-beta semiconductor leader in a sector rotation, AMD is well-positioned to extend gains and outpace SPY. Risks include profit-taking after a record run, high valuation relative to near-term earnings, and the possibility of a sharp reversal if AI sentiment cools. Reference price is a live intraday quote from Investing.com (Reuters).
INTC
Intel rose over 9% intraday after reports that it is extending its advanced packaging strategy to Micro LED substrates in partnership with AUO, targeting co-packaged optics and high-density computing. The catalyst is substantive and specific, positioning Intel in a high-growth adjacent market. The stock has gained over 30% in September and is benefiting from the broader semiconductor rally and improving foundry sentiment. Risks include Bernstein's Neutral rating with a $110 target, execution risk on the new partnership, and the stock's sharp run-up making it vulnerable to a pullback. Reference price is a live intraday quote from Cnyes.
ARM
ARM jumped over 12% intraday, leading the Philadelphia Semiconductor Index higher, as the AI-driven semiconductor rally broadened. The company's chip design IP is central to the AI data centre buildout, and its licensing model gives it leverage to rising chip volumes across multiple customers. The catalyst is sector momentum and continued AI infrastructure spending rather than a single company-specific event, but the strength is substantive. Risks include an extremely high P/E ratio of over 280, making it vulnerable to sharp reversals, and the stock being up over 18% in a week. Reference price is a live intraday quote from Cnyes.
MSTR
Strategy (MicroStrategy) surged over 10% intraday as Bitcoin broke through $85,000 to its highest level since January. The company holds approximately 845,100 BTC with an unrealized gain of over $8.1 billion, and its equity serves as a high-beta proxy for Bitcoin exposure. The catalyst is substantive: Bitcoin's rally is driven by SEC-CFTC regulatory harmonization progress and strong ETF inflows ($433 million on September 18). Risks include the stock's overbought technical condition, a potential Bitcoin pullback, and the leveraged nature of the treasury strategy. Reference price is a live intraday quote from Blockchain.news.
COIN
Coinbase rose nearly 6% intraday, trading at $204.12, as the crypto market rallied broadly with Bitcoin above $85,000 and altcoins surging. The company is a direct beneficiary of increased trading volumes and the SEC-CFTC harmonization initiative, which reduces regulatory uncertainty for crypto exchanges. The catalyst is substantive and tied to concrete regulatory progress. Risks include the stock's high correlation to volatile crypto prices, potential profit-taking after a sharp move, and the possibility of a regulatory reversal. Reference price is a live intraday quote from Blockchain.news.
Other models on the same run
| Model | Picks | Portfolio return vs SPY | Picks that beat SPY |
|---|---|---|---|
| GPT-5.6 Sol | AMD, INTC, META, SMCI, GLW | +0.23% | 20% |
| Claude Opus 5 | SMH, NVDA, ICHR, QQQ, IWM | +0.76% | 80% |
| Muse Spark 1.1 | GOOG, NVDA, JPM, MSFT, AAPL | -0.27% | 80% |
| Gemini 1.5 Pro | NVDA, GOOG, AAPL, SOXL, MSFT | +1.73% | 100% |
| Grok 4.5 | INTC, AMD, ARM, SOXX, NVDA | +1.15% | 60% |
Written up on ForecastNest Insights: Stock Selection: DeepSeek V3's picks for 2026-09-21.
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