MYDA Advisors LLC

MYDA Advisors LLC declares $95.4M in 19 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 14.2% of its $671.9M 13F portfolio. Largest positions: Core Scientific (0.22% of the company) and Amazon (0.00% of the company). Over time: $95.4M in 19 of these companies for Q2 2026, against $17.6M in 4 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $42.2M and sold $60.4M of these stocks, at the quarter's prices: a net sale of $18.2M; 9 new positions and 7 sold out.

Performance of its AI picks

The AI-stock portfolio MYDA Advisors LLC declared for Q2 2026 (Form 13F), held unchanged, returned -7.5% in Q3 2026 (SMH -7.1%). Over the last 12 months, quarter after quarter: +16.8% (SMH +87.2%). Over three years, quarter after quarter: +274.7% (SMH +325.8%). Over five years, quarter after quarter: +215.5% (SMH +389.8%). Trades made during a quarter are not visible in 13F filings: this measures its declared picks, not the return of its funds.

Largest positions

1. Core Scientific (CORZ) — $17.9M: 700,000 shares, 0.22% of the company, 2.7% of its portfolio (trimmed this quarter); held since Q1 2024
2. Amazon (AMZN) — $15.5M: 65,000 shares, 0.00% of the company, 2.3% of its portfolio (added this quarter); held since Q1 2023
3. NVIDIA (NVDA) — $15.4M: 77,000 shares, 0.00% of the company, 2.3% of its portfolio (new position this quarter)
4. SpaceX (SPCX) — $6.0M: 35,000 shares, 0.00% of the company, 0.89% of its portfolio
5. Snowflake (SNOW) — $5.9M: 23,000 shares, 0.01% of the company, 0.87% of its portfolio (added this quarter); held since Q4 2024
6. Datadog (DDOG) — $5.2M: 20,000 shares, 0.01% of the company, 0.78% of its portfolio (added this quarter); held since Q3 2025
7. MongoDB (MDB) — $4.7M: 14,000 shares, 0.02% of the company, 0.70% of its portfolio (added this quarter); held since Q1 2024
8. Arm Holdings (ARM) — $4.3M: 12,000 shares, 0.00% of the company, 0.63% of its portfolio (new position this quarter)
9. Constellation Energy (CEG) — $4.0M: 16,000 shares, 0.00% of the company, 0.59% of its portfolio (trimmed this quarter); held since Q4 2024
10. Vicor (VICR) — $3.8M: 10,000 shares, 0.02% of the company, 0.57% of its portfolio (new position this quarter)
11. indie Semiconductor (INDI) — $2.9M: 651,126 shares, 0.28% of the company, 0.44% of its portfolio (added this quarter); held since Q4 2023
12. TeraWulf (WULF) — $2.5M: 100,000 shares, 0.02% of the company, 0.37% of its portfolio (trimmed this quarter); held since Q4 2025
13. CoreWeave (CRWV) — $1.8M: 18,000 shares, 0.00% of the company, 0.27% of its portfolio (new position this quarter)
14. Micron (MU) — $1.7M: 1,500 shares, 0.00% of the company, 0.26% of its portfolio (trimmed this quarter); held since Q1 2026
15. Generac (GNRC) — $1.2M: 4,000 shares, 0.01% of the company, 0.17% of its portfolio (new position this quarter)

By sector

• Chips & compute — $22.9M, 24% of its AI holdings, 4 companies
• Cloud & AI giants — $22.5M, 24% of its AI holdings, 3 companies
• Neoclouds & data centers — $22.2M, 23% of its AI holdings, 3 companies
• AI software — $15.8M, 17% of its AI holdings, 3 companies
• Power, electrical & cooling — $8.9M, 9% of its AI holdings, 3 companies
• Memory & storage — $1.7M, 2% of its AI holdings, 1 company
• Optics — $1.0M, 1% of its AI holdings, 1 company
• Equipment & test — $358,029.00, 0% of its AI holdings, 1 company

Biggest changes this quarter

• opened a position in NVIDIA (NVDA): +$15.4M at the quarter's price
• sold out of Microsoft (MSFT): -$14.8M at the quarter's price
• trimmed TeraWulf (WULF): -$13.0M at the quarter's price
• trimmed Core Scientific (CORZ): -$11.8M at the quarter's price
• sold out of Centrus Energy (LEU): -$6.1M at the quarter's price
• opened a position in Arm Holdings (ARM): +$4.3M at the quarter's price
• added to MongoDB (MDB): +$4.0M at the quarter's price
• opened a position in Vicor (VICR): +$3.8M at the quarter's price
• sold out of TTM Technologies (TTMI): -$3.2M at the quarter's price
• sold out of Viavi (VIAV): -$3.1M at the quarter's price

Other holders of this size

• Vanguard — $3.6T in 225 of these companies
• BlackRock — $3.1T in 226 of these companies
• State Street — $1.6T in 222 of these companies
• Fidelity (FMR) — $1.2T in 223 of these companies
• Geode Capital — $890.9B in 220 of these companies
• Capital Group — $881.7B in 132 of these companies
• JPMorgan — $717.8B in 225 of these companies
• Invesco — $683.3B in 220 of these companies

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