SES AI Corporation (SES) Ownership
SES ownership summary
as of October 17, 2026- Institutions
- 37.1% of shares outstanding
- Insiders
- 15.89% of shares outstanding
- Shares outstanding
- 327.4M
- Float
- 299.4M shares available to trade
- Short interest
- 15.85% 51.2M shares short
- Days to cover
- 2.49 short interest up 15.1% vs prior month
- Institutions 37.14%
- Insiders 15.89%
- Other investors 46.97%
SES top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 5.10% | 18.9M | $13.5M | +13.5M (+245.7%) | June 30, 2026 |
| 2 | Amvescap Plc. | 2.76% | 10.3M | $7.3M | +2.4M (+30.0%) | June 30, 2026 |
| 3 | State Street Corp | 2.59% | 9.6M | $6.9M | +6.6M (+216.6%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 2.58% | 9.6M | $6.8M | +114,877 (+1.2%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 1.78% | 6.6M | $4.7M | +3.4M (+107.3%) | June 30, 2026 |
| 6 | Two Sigma Investments LLC | 1.54% | 5.7M | $4.1M | +3.7M (+187.0%) | June 30, 2026 |
| 7 | Temasek Holdings Ltd. | 0.85% | 3.2M | $2.3M | — | June 30, 2026 |
| 8 | General Motors Holdings LLC | 0.79% | 2.9M | $2.1M | — | June 30, 2026 |
| 9 | Charles Schwab Investment Management Inc | 0.58% | 2.1M | $1.5M | +547,826 (+34.2%) | June 30, 2026 |
| 10 | Northern Trust Corp | 0.53% | 2.0M | $1.4M | +1.3M (+210.5%) | June 30, 2026 |
| 11 | Vanguard Portfolio Management, LLC | 0.53% | 2.0M | $1.4M | +1.7M (+714.1%) | June 30, 2026 |
| 12 | Vanguard Fiduciary Trust Co | 0.46% | 1.7M | $1.2M | +213,634 (+14.2%) | June 30, 2026 |
| 13 | Renaissance Technologies Corp | 0.45% | 1.7M | $1.2M | −2.9M (−63.5%) | June 30, 2026 |
| 14 | Acadian Asset Management LLC | 0.26% | 975K | $696,081 | +615,836 (+171.5%) | June 30, 2026 |
| 15 | UBS Group AG | 0.23% | 866K | $618,085 | −867,015 (−50.0%) | June 30, 2026 |
| 16 | XTX Topco Ltd | 0.21% | 792K | $565,771 | +332,692 (+72.4%) | June 30, 2026 |
| 17 | Bank of New York Mellon Corp | 0.19% | 699K | $499,173 | +623,501 (+824.5%) | June 30, 2026 |
| 18 | CWM Advisors, LLC | 0.19% | 696K | $496,988 | +149,284 (+27.3%) | June 30, 2026 |
| 19 | Millennium Management LLC | 0.17% | 623K | $445,073 | −2.6M (−80.4%) | June 30, 2026 |
| 20 | Kestra Advisory Services, LLC | 0.17% | 619K | $441,680 | +222,415 (+56.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 35.5M shares and 3 cut 6.3M.
SES top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 1.73% | 6.4M | $4.6M | −73,792 (−1.1%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 1.68% | 6.2M | $4.5M | — | August 31, 2026 |
| 3 | Stt Strt®SPDR®S&PKenshoNwEcosComposETF | 1.28% | 4.8M | $3.4M | — | September 30, 2026 |
| 4 | Fidelity Small Cap Index | 0.74% | 2.7M | $2.0M | −3,375 (−0.1%) | July 31, 2026 |
| 5 | iShares Russell 2000 Value ETF | 0.53% | 2.0M | $1.4M | +2,960 (+0.2%) | September 30, 2026 |
| 6 | Invesco Global Clean Energy ETF | 0.52% | 1.9M | $1.4M | — | September 30, 2026 |
| 7 | Invesco Global Clean Energy ETF Acc | 0.48% | 1.8M | $1.3M | — | September 30, 2026 |
| 8 | Schwab US Small-Cap ETF™ | 0.44% | 1.6M | $1.2M | +1,089 (+0.1%) | September 30, 2026 |
| 9 | Fidelity Extended Market Index | 0.43% | 1.6M | $1.1M | +646,444 (+67.6%) | August 31, 2026 |
| 10 | Vanguard Russell 2000 ETF | 0.39% | 1.4M | $1.0M | +28,755 (+2.0%) | August 31, 2026 |
| 11 | R-co Thematic Blockchain Global Eq I EUR | 0.24% | 897K | $640,627 | −24 (−0.0%) | July 31, 2026 |
| 12 | iShares Micro-Cap ETF | 0.21% | 796K | $568,235 | −5,489 (−0.7%) | September 30, 2026 |
| 13 | Inspire Small/Mid Cap ETF | 0.19% | 696K | $496,988 | — | September 30, 2026 |
| 14 | Schwab Small Cap Index | 0.16% | 611K | $436,086 | — | August 31, 2026 |
| 15 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.15% | 561K | $400,779 | +26,848 (+5.0%) | August 31, 2026 |
| 16 | Fidelity Total Market Index | 0.13% | 490K | $349,995 | — | August 31, 2026 |
| 17 | iShares Russell 2000 Small-Cap Idx Instl | 0.13% | 471K | $336,409 | — | August 31, 2026 |
| 18 | NewDeal Invest, kl n | 0.11% | 404K | $288,162 | +157,984 (+64.3%) | September 30, 2026 |
| 19 | Fidelity Series Total Market Index | 0.11% | 401K | $286,146 | — | August 31, 2026 |
| 20 | Fidelity True North Cl F | 0.11% | 400K | $285,600 | — | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SES insider transactions
latest 5| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-09 | Kyle Pilkington | Sell | $1.20 | 25,000 | $30,000 |
| 2026-01-23 | Hong Gan | Sell | $2.50 | 100,000 | $250,000 |
| 2026-01-22 | Hong Gan | Sell | $2.50 | 150,000 | $375,000 |
| 2025-12-15 | Hong Gan | Sell | $1.98 | 100,000 | $198,000 |
| 2025-11-17 | Hong Gan | Sell | $1.90 | 150,000 | $285,000 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
SES shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SES
Institutional investors own 37.1% of SES AI's shares and insiders 15.89%. The largest holder is BlackRock Inc with 5.10% of the shares (18.9M), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 3 reduced their stake in the latest filings. Short interest is 15.85% of the float, or 2.49 days of average trading volume. The share count rose 28,956.3% since 2014.
Related: SES analyst forecast, SES key metrics. See the SES stock overview for the latest quote and news.
SES ownership FAQ
Who owns the most SES AI stock?
The largest shareholders of SES AI are BlackRock Inc (5.10%), Amvescap Plc. (2.76%), State Street Corp (2.59%), Vanguard Capital Management, LLC (2.58%), Geode Capital Management, LLC (1.78%).
What percentage of SES AI is owned by institutions?
Institutions hold 37.1% of SES AI's shares outstanding; insiders hold 15.89%.
Which funds own SES AI?
The largest fund holders of SES AI are iShares Russell 2000 ETF (1.73%), Vanguard MStar Total Stk Mkt Idx Invest (1.68%), Stt Strt®SPDR®S&PKenshoNwEcosComposETF (1.28%), Fidelity Small Cap Index (0.74%), iShares Russell 2000 Value ETF (0.53%).
What is SES AI's short interest?
51.2M shares of SES AI were sold short, 15.85% of the float; at the average daily volume it would take 2.49 days to cover.
Are insiders buying or selling SES AI?
Of the latest 5 reported insider transactions in SES AI (since November 17, 2025), 0 were purchases and 5 were sales.
How many shares of SES AI are outstanding?
SES AI has 327.4M shares outstanding, of which 299.4M are in the public float.