Stephens Investment Management Group LLC

Stephens Investment Management Group LLC declares $2.1B in 49 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 22.3% of its $9.3B 13F portfolio. Largest positions: Credo (0.27% of the company) and Lattice Semiconductor (0.60% of the company). Over time: $2.1B in 49 of these companies for Q2 2026, against $403.0M in 18 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $277.3M and sold $385.6M of these stocks, at the quarter's prices: a net sale of $108.2M; 6 new positions and 1 sold out.

Performance of its AI picks

The AI-stock portfolio Stephens Investment Management Group LLC declared for Q2 2026 (Form 13F), held unchanged, returned -19.1% in Q3 2026 (SMH -7.1%), ranked 1745 of 1,783 active managers. Over the last 12 months, quarter after quarter: +66.5% (SMH +87.2%), ranked 91 of 1,359 active managers. Over three years, quarter after quarter: +186.1% (SMH +325.8%), ranked 132 of 783 active managers. Over five years, quarter after quarter: +194.5% (SMH +389.8%), ranked 97 of 535 active managers. 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. Credo (CRDO) — $139.3M: 512,263 shares, 0.27% of the company, 1.5% of its portfolio (added this quarter); held since Q2 2025
2. Lattice Semiconductor (LSCC) — $131.3M: 858,613 shares, 0.60% of the company, 1.4% of its portfolio (trimmed this quarter); held since Q3 2021
3. Astera Labs (ALAB) — $123.2M: 254,996 shares, 0.15% of the company, 1.3% of its portfolio (trimmed this quarter); held since Q3 2025
4. MACOM (MTSI) — $120.4M: 316,408 shares, 0.41% of the company, 1.3% of its portfolio (trimmed this quarter); held since Q1 2024
5. BWX Technologies (BWXT) — $116.9M: 600,434 shares, 0.66% of the company, 1.3% of its portfolio (added this quarter); held since Q4 2024
6. Generac (GNRC) — $92.0M: 314,253 shares, 0.53% of the company, 0.99% of its portfolio (added this quarter); held since Q3 2022
7. Bloom Energy (BE) — $83.8M: 276,883 shares, 0.09% of the company, 0.90% of its portfolio (trimmed this quarter); held since Q3 2025
8. AAON (AAON) — $81.6M: 643,256 shares, 0.78% of the company, 0.87% of its portfolio (added this quarter); held since Q2 2024
9. Vertiv (VRT) — $79.9M: 238,519 shares, 0.06% of the company, 0.86% of its portfolio (trimmed this quarter); held since Q2 2023
10. Fabrinet (FN) — $73.1M: 130,124 shares, 0.36% of the company, 0.78% of its portfolio (trimmed this quarter); held since Q4 2024
11. Hubbell (HUBB) — $72.1M: 137,758 shares, 0.26% of the company, 0.77% of its portfolio (added this quarter); held since Q2 2024
12. SiTime (SITM) — $70.4M: 94,484 shares, 0.31% of the company, 0.76% of its portfolio (added this quarter); held since Q1 2026
13. Onto Innovation (ONTO) — $70.2M: 185,477 shares, 0.38% of the company, 0.75% of its portfolio (added this quarter); held since Q1 2026
14. Microchip (MCHP) — $64.4M: 705,930 shares, 0.13% of the company, 0.69% of its portfolio (added this quarter); held since Q4 2019 or earlier
15. Power Integrations (POWI) — $63.3M: 755,549 shares, 1.4% of the company, 0.68% of its portfolio (added this quarter); held since Q4 2019 or earlier

By sector

• Power, electrical & cooling — $605.9M, 29% of its AI holdings, 9 companies
• Interconnect — $437.2M, 21% of its AI holdings, 4 companies
• Chips & compute — $428.9M, 21% of its AI holdings, 11 companies
• Optics — $231.8M, 11% of its AI holdings, 5 companies
• AI software — $191.5M, 9% of its AI holdings, 10 companies
• Equipment & test — $154.0M, 7% of its AI holdings, 5 companies
• Memory & storage — $33.0M, 2% of its AI holdings, 1 company
• Cloud & AI giants — $2.3M, 0% of its AI holdings, 4 companies

Biggest changes this quarter

• trimmed Vertiv (VRT): -$84.1M at the quarter's price
• trimmed MACOM (MTSI): -$75.9M at the quarter's price
• trimmed Bloom Energy (BE): -$66.8M at the quarter's price
• trimmed Marvell (MRVL): -$55.0M at the quarter's price
• sold out of Silicon Labs (SLAB): -$42.1M at the quarter's price
• opened a position in Viavi (VIAV): +$36.7M at the quarter's price
• opened a position in Silicon Motion (SIMO): +$33.0M at the quarter's price
• trimmed Ciena (CIEN): -$32.1M at the quarter's price
• added to Credo (CRDO): +$21.4M at the quarter's price
• added to Ambarella (AMBA): +$21.2M 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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