Seer, Inc. (SEER) Ownership
SEER ownership summary
as of October 18, 2026- Institutions
- 49.2% of shares outstanding
- Insiders
- 14.84% of shares outstanding
- Shares outstanding
- 55.4M
- Float
- 40.5M shares available to trade
- Short interest
- 0.22% 109K shares short
- Days to cover
- 0.40 short interest up 24.4% vs prior month
- Institutions 49.22%
- Insiders 14.84%
- Other investors 35.94%
SEER top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | SoftBank Group Corp | 9.27% | 5.1M | $10.4M | — | June 30, 2026 |
| 2 | Siren, L.L.C. | 4.44% | 2.5M | $5.0M | — | June 30, 2026 |
| 3 | Acadian Asset Management LLC | 3.53% | 2.0M | $4.0M | −121,005 (−5.8%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.31% | 1.8M | $3.7M | −127,938 (−6.5%) | June 30, 2026 |
| 5 | BlackRock Inc | 2.58% | 1.4M | $2.9M | −393,199 (−21.6%) | June 30, 2026 |
| 6 | Renaissance Technologies Corp | 1.78% | 986K | $2.0M | +8,812 (+0.9%) | June 30, 2026 |
| 7 | NANO CAP NEW MILLENNIUM GROWTH FUND L P | 1.49% | 825K | $1.7M | — | June 30, 2026 |
| 8 | AJU IB Investment Co Ltd | 1.47% | 816K | $1.7M | — | March 31, 2026 |
| 9 | Citadel Advisors Llc | 0.94% | 519K | $1.1M | +519,310 (0.0%) | June 30, 2026 |
| 10 | Two Sigma Investments LLC | 0.89% | 492K | $999,365 | −19,300 (−3.8%) | June 30, 2026 |
| 11 | Geode Capital Management, LLC | 0.83% | 460K | $934,673 | +37,453 (+8.9%) | June 30, 2026 |
| 12 | Bridgeway Capital Management, LLC | 0.83% | 459K | $932,669 | — | June 30, 2026 |
| 13 | Peapod Lane Capital LLC | 0.80% | 445K | $904,263 | +6,869 (+1.6%) | June 30, 2026 |
| 14 | 1888 Investments, LLC | 0.65% | 359K | $729,060 | — | June 30, 2026 |
| 15 | The Goldman Sachs Group Inc | 0.45% | 247K | $500,675 | +52,465 (+27.0%) | June 30, 2026 |
| 16 | Jacobs Levy Equity Management, Inc. | 0.40% | 222K | $451,334 | +79,090 (+55.2%) | June 30, 2026 |
| 17 | Vanguard Fiduciary Trust Co | 0.39% | 217K | $440,431 | +1,433 (+0.7%) | June 30, 2026 |
| 18 | Dimensional Fund Advisors, Inc. | 0.38% | 213K | $431,629 | −9,291 (−4.2%) | June 30, 2026 |
| 19 | Edgewood Management LLC | 0.36% | 200K | $406,000 | +100,000 (+100.0%) | June 30, 2026 |
| 20 | GSA Capital Partners LLP | 0.33% | 185K | $374,584 | −9,980 (−5.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 805K shares and 6 cut 681K.
SEER top mutual fund and ETF holders
18 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.21% | 1.2M | $2.5M | — | August 31, 2026 |
| 2 | Bridgeway Ultra-Small Company | 0.69% | 380K | $771,487 | — | June 30, 2026 |
| 3 | BSF Systematic US Eq Abs Ret A2 USD | 0.62% | 343K | $697,252 | — | December 31, 2025 |
| 4 | Fidelity Extended Market Index | 0.51% | 282K | $571,950 | −1,514 (−0.5%) | August 31, 2026 |
| 5 | iShares Micro-Cap ETF | 0.24% | 134K | $271,527 | −922 (−0.7%) | September 30, 2026 |
| 6 | Goldman Sachs Absolute Ret Trckr Instl | 0.22% | 122K | $248,265 | +47,409 (+63.3%) | June 30, 2026 |
| 7 | Fidelity Total Market Index | 0.15% | 81K | $165,063 | — | August 31, 2026 |
| 8 | Fidelity Nasdaq Composite Index | 0.12% | 66K | $134,039 | — | August 31, 2026 |
| 9 | EA Bridgeway Ultra-Small Company Mkt ETF | 0.12% | 66K | $133,570 | — | September 30, 2026 |
| 10 | Avantis US Small Cap Equity ETF | 0.11% | 62K | $124,910 | — | September 30, 2026 |
| 11 | Fidelity Series Total Market Index | 0.10% | 55K | $112,383 | — | August 31, 2026 |
| 12 | DFA US Micro Cap I | 0.07% | 38K | $76,787 | — | August 31, 2026 |
| 13 | Vanguard Balanced Index Inv | 0.06% | 35K | $70,650 | — | August 31, 2026 |
| 14 | Vanguard MStar Inst Ttl StkMktIdxInstlPl | 0.05% | 29K | $59,012 | — | August 31, 2026 |
| 15 | Invesco RAFI US 1500 Small-Mid ETF | 0.04% | 24K | $48,182 | — | September 30, 2026 |
| 16 | Dimensional Global Core Equity USD Acc | 0.03% | 14K | $29,413 | — | August 31, 2026 |
| 17 | Vanguard U.S. Eq Idx £ Acc | 0.02% | 13K | $26,165 | — | August 31, 2026 |
| 18 | Dimensional US Sustainability Core 1 ETF | 0.02% | 11K | $23,047 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SEER insider transactions
latest 5| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-11-19 | David R Horn | Sell | $1.97 | 6,797 | $13,390 |
| 2025-11-19 | Omid Farokhzad | Sell | $1.97 | 33,838 | $66,661 |
| 2025-08-20 | David R Horn | Sell | $2.04 | 6,827 | $13,927 |
| 2025-08-20 | Omid Farokhzad | Sell | $2.04 | 33,992 | $69,344 |
| 2025-06-13 | Dipchand Nishar | Sell | $2.08 | 30,253 | $62,926 |
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.
SEER shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SEER
Institutional investors own 49.2% of Seer's shares and insiders 14.84%. The largest holder is SoftBank Group Corp with 9.27% of the shares (5.1M), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 6 reduced their stake in the latest filings. Short interest is 0.22% of the float, or 0.40 days of average trading volume. The share count rose 62.2% since 2019.
Related: SEER analyst forecast, SEER key metrics. See the SEER stock overview for the latest quote and news.
SEER ownership FAQ
Who owns the most Seer stock?
The largest shareholders of Seer are SoftBank Group Corp (9.27%), Siren, L.L.C. (4.44%), Acadian Asset Management LLC (3.53%), Vanguard Capital Management, LLC (3.31%), BlackRock Inc (2.58%).
What percentage of Seer is owned by institutions?
Institutions hold 49.2% of Seer's shares outstanding; insiders hold 14.84%.
Which funds own Seer?
The largest fund holders of Seer are Vanguard MStar Total Stk Mkt Idx Invest (2.21%), Bridgeway Ultra-Small Company (0.69%), BSF Systematic US Eq Abs Ret A2 USD (0.62%), Fidelity Extended Market Index (0.51%), iShares Micro-Cap ETF (0.24%).
What is Seer's short interest?
109K shares of Seer were sold short, 0.22% of the float; at the average daily volume it would take 0.40 days to cover.
Are insiders buying or selling Seer?
Of the latest 5 reported insider transactions in Seer (since June 13, 2025), 0 were purchases and 5 were sales.
How many shares of Seer are outstanding?
Seer has 55.4M shares outstanding, of which 40.5M are in the public float.