Latest Period
Q2 2026
Security Snapshot
SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value per share (SERA) Institutional Ownership
CUSIP: 81749D107
13F Institutional Holders and Ownership History from Q3 2021 to Q2 2026
Institutions Reporting
45
Shares (Excl. Options)
17,056,597
Price
$1.82
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Class A Common Stock $0.0001 par value per share
- Symbol
- SERA on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 17,056,597
- Total 13F value
- $31,044,898
- Portfolio coverage rank
- 0%
- Share change
- -2,887,131
- Value change
- -$5,869,162
- Number of holders
- 45
- Shares outstanding
- 38,190,361
- SEC-reported price per share
- $2.20
- Insider filing price
- $2.20
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- SERA - SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value per share is tracked under CUSIP 81749D107.
- 45 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 55 to 45 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $40,487,661 to $31,044,898.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 45 institutions filings for Q2 2026.
Security key
81749D107
Latest holder period
Q2 2026
13F holders
45
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
SERA full holder history
SERA PROGNOSTICS, INC. SEC filings
SERA PROGNOSTICS, INC. company facts
SERA PROGNOSTICS, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 81749D107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
SERA
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | 16% | $18,418,870 | 5,498,170 | Baker Bros. Advisors LP | 12 Feb 2025 | |||
| Whetstone Capital Advisors, LLC | 8.6% | -6.7% | $7,341,294 | -$339,269 | 3,306,889 | -4.4% | Whetstone Capital Advisors, LLC | 31 Mar 2026 |
| Aberdeen Group plc | 7.2% | +19% | $5,507,050 | +$1,052,316 | 2,753,525 | +24% | Aberdeen Group plc | 30 Jun 2026 |
| Chione Ltd | 7.6% | $8,727,926 | 2,605,351 | Chione Ltd. | 11 Feb 2025 | |||
| Vivo Capital IX, LLC | 4.5% | $5,528,974 | 1,650,440 | Vivo Capital IX, LLC | 31 Mar 2025 |
As of 30 Jun 2026, 45 institutional investors reported holding 17,056,597 shares of SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value per share (SERA). This represents 45% of the company’s total 38,190,361 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
44%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | 14% | 5,498,170 | 0% | 0.05% | $10,006,669 |
| Whetstone Capital Advisors, LLC | 8.7% | 3,306,889 | 0% | 1.6% | $6,018,538 |
| Aberdeen Group plc | 7.2% | 2,753,525 | +7.9% | 0.01% | $5,011,416 |
| Vivo Capital, LLC | 4.3% | 1,650,440 | 0% | 0.27% | $3,003,801 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4% | 1,297,792 | +7.8% | 0% | $2,361,981 |
| CAPTRUST FINANCIAL ADVISORS | 1.4% | 535,755 | -0.19% | 0% | $975,074 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.91% | 348,967 | -4% | 0% | $635,473 |
| BlackRock, Inc. | 0.58% | 221,369 | +13% | 0% | $402,891 |
| AWM Investment Company, Inc. | 0.54% | 207,382 | 0% | 0.03% | $377,435 |
| VANGUARD FIDUCIARY TRUST CO | 0.45% | 170,908 | +0.73% | 0% | $311,053 |
| STATE STREET CORP | 0.33% | 124,792 | 0% | 0% | $227,121 |
| MILLENNIUM MANAGEMENT LLC | 0.19% | 73,986 | -19% | 0% | $134,655 |
| Perigon Wealth Management, LLC | 0.19% | 72,685 | 0% | 0% | $132,287 |
| NORTHERN TRUST CORP | 0.18% | 68,595 | -29% | 0% | $124,843 |
| Bank of New York Mellon Corp | 0.16% | 60,927 | 0% | 0% | $110,887 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.15% | 55,705 | +22% | 0% | $101,383 |
| Requisite Capital Management, LLC | 0.15% | 55,648 | 0% | 0.02% | $101,279 |
| MORGAN STANLEY | 0.13% | 50,972 | -51% | 0% | $92,769 |
| Qube Research & Technologies Ltd | 0.13% | 50,871 | +155% | 0% | $92,585 |
| Ballentine Partners, LLC | 0.13% | 49,664 | 0% | 0% | $90,388 |
| Twelve Points Wealth Management LLC | 0.11% | 43,388 | 0% | 0.02% | $78,966 |
| HighTower Advisors, LLC | 0.11% | 42,234 | 0% | 0% | $76,866 |
| CITADEL ADVISORS LLC | 0.11% | 41,411 | -83% | 0% | $75,368 |
| Catalyst Funds Management Pty Ltd | 0.1% | 38,890 | +65% | 0% | $70,780 |
| GOLDMAN SACHS GROUP INC | 0.09% | 32,541 | +76% | 0% | $59,225 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
20
Latest
Q2 2026
Rows shown
1-20 of 20
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 17,056,597 | $31,044,898 | -$5,869,162 | $1.82 | 45 |
| 2026 Q1 | 19,944,838 | $40,487,661 | +$4,178,612 | $2.03 | 55 |
| 2025 Q4 | 17,640,480 | $52,067,649 | -$1,545,175 | $2.95 | 56 |
| 2025 Q3 | 18,156,273 | $55,563,958 | -$1,352,156 | $3.06 | 61 |
| 2025 Q2 | 18,609,445 | $51,523,609 | -$7,499,389 | $2.77 | 57 |
| 2025 Q1 | 20,231,342 | $74,421,380 | +$7,360,509 | $3.68 | 70 |
| 2024 Q4 | 18,080,486 | $147,052,539 | +$674,056 | $8.14 | 71 |
| 2024 Q3 | 17,992,458 | $140,341,925 | +$11,126,226 | $7.80 | 59 |
| 2024 Q2 | 16,578,359 | $98,177,558 | +$11,498,661 | $5.92 | 65 |
| 2024 Q1 | 14,410,216 | $131,132,861 | +$33,173,495 | $9.10 | 51 |
| 2023 Q4 | 10,917,569 | $65,287,321 | +$31,973,805 | $5.98 | 45 |
| 2023 Q3 | 8,863,155 | $16,485,265 | -$2,039,479 | $1.86 | 27 |
| 2023 Q2 | 9,516,701 | $31,357,944 | -$107,402 | $3.30 | 32 |
| 2023 Q1 | 9,529,218 | $36,496,581 | +$11,033,423 | $3.83 | 35 |
| 2022 Q4 | 7,042,648 | $8,861,320 | -$2,401,722 | $1.26 | 29 |
| 2022 Q3 | 8,696,925 | $13,914,096 | +$64,785 | $1.60 | 31 |
| 2022 Q2 | 8,655,188 | $14,197,000 | -$4,569,945 | $1.64 | 27 |
| 2022 Q1 | 9,651,032 | $36,596,601 | +$1,338,975 | $3.79 | 41 |
| 2021 Q4 | 9,279,441 | $63,795,000 | -$353,446 | $6.87 | 36 |
| 2021 Q3 | 8,651,053 | $96,148,000 | +$96,147,999 | $11.11 | 35 |