Who owns STMicroelectronics (STM)?
70 holders named in SEC filings declare between 13.3% and 17.1% of STMicroelectronics' shares outstanding, as of Jun 30, 2026. The largest are VanEck (1.6%), Situational Awareness LP (0.88%) and BlackRock (0.74%); the five largest hold 4.6% together. Another 537 institutions hold small positions worth 2.0%. At least 80.9% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 8.3% and sold 2.3% of the shares, a net purchase of 6.1%; 250 opened a position, 165 added, 108 reduced and 41 sold out. Biggest buyers: WT Asset Management Ltd (+5.8M shares) and ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (+3.5M shares). Biggest sellers: Citadel (-3.1M) and Millennium (-2.5M). Over time, 604 managers declared STMicroelectronics in their 13F for Q2 2026, against 210 for Q4 2019: together at most 19.1% of the shares outstanding, against 3.2%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| VanEck | 13F | 1.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Situational Awareness LP | 13F | 0.88% | Jun 30, 2026 | Q2 2026 |
| BlackRock | 13F | 0.74% | Jun 30, 2026 | Q3 2020 |
| Morgan Stanley | 13F | 0.72% | Jun 30, 2026 | Q4 2019 or earlier |
| WT Asset Management Ltd | 13F | 0.65% | Jun 30, 2026 | Q2 2026 |
| Slate Path Capital LP | 13F | 0.59% | Jun 30, 2026 | Q4 2025 |
| Goldman Sachs | 13F | 0.58% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 0.53% | Jun 30, 2026 | Q4 2023 |
| Citadel | 13F | 0.43% | Jun 30, 2026 | Q3 2020 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 13F | 0.39% | Jun 30, 2026 | Q2 2026 |
| BNP PARIBAS FINANCIAL MARKETS | 13F | 0.39% | Jun 30, 2026 | Q4 2019 or earlier |
| Point72 | 13F | 0.35% | Jun 30, 2026 | Q1 2026 |
| Duquesne Family Office LLC | 13F | 0.35% | Jun 30, 2026 | Q4 2025 |
| Hill City Capital, LP | 13F | 0.35% | Jun 30, 2026 | Q1 2026 |
| JPMorgan | 13F | 0.35% | Jun 30, 2026 | Q4 2019 or earlier |
| Barclays | 13F | 0.33% | Jun 30, 2026 | Q4 2019 or earlier |
| Jane Street | 13F | 0.32% | Jun 30, 2026 | Q1 2026 |
| Dimensional | 13F | 0.32% | Jun 30, 2026 | Q4 2019 or earlier |
| Artisan Partners Limited Partnership | 13F | 0.31% | Jun 30, 2026 | Q2 2026 |
| Bank of America | 13F | 0.30% | Jun 30, 2026 | Q4 2019 or earlier |
| FIL Ltd | 13F | 0.29% | Jun 30, 2026 | Q2 2025 |
| Holocene Advisors, LP | 13F | 0.28% | Jun 30, 2026 | Q1 2026 |
| Sachem Head Capital Management LP | 13F | 0.25% | Jun 30, 2026 | Q2 2026 |
| UBS | 13F | 0.24% | Jun 30, 2026 | Q4 2019 or earlier |
| Rafferty Asset Management, LLC | 13F | 0.24% | Jun 30, 2026 | Q3 2021 |
STMicroelectronics institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 210 | 3.2% | $777.8M | 66.1% |
| Q4 2020 | 260 | 3.6% | $1.2B | 75.8% |
| Q4 2021 | 313 | 4.2% | $1.9B | 64.7% |
| Q4 2022 | 299 | 4.9% | $1.6B | 66.8% |
| Q4 2023 | 358 | 5.1% | $2.3B | 60.3% |
| Q4 2024 | 314 | 8.8% | $2.0B | 61.1% |
| Q4 2025 | 318 | 10.1% | $2.3B | 53.0% |
| Q2 2026 | 604 | 19.1% | $12.7B | 68.6% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.