SERA · Sera Prognostics, Inc. · Holdings

$2.03 -0.02 (-0.98%) Q2 2026 earnings call transcript

Market Cap

$80.87M

39.45M

Volume · Oct 28 317 Avg daily vol (3M) 23.3K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of SERA: 13F, 13D and 13G, insiders and funds →

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 52

Total Value: $36,788,491

Total Shares: 19,789,767

Institutional Ownership Trend

21 quarters

Holder Concentration

Across 47 13F filers

Top Holder

32.2%

of institutional value

Top 5

85.1%

of institutional value

Top 10

93.8%

of institutional value

HHI

1,847

Moderately concentrated

Who Holds SERA

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 47 filers, like-for-like change -14.5%; actively managed books -20.8%; index-like books +4.9%.

Holder type	Share	Filers	Change	Exited
Registered adviser	78.8%	26	-2.1%	4
Exempt adviser	0.3%	1	+155.4%	0
Bank	1.6%	7	-18.3%	0
Broker-dealer	0.0%	0	-100.0%	1
Non-US	0.0%	2	-21.8%	0
Holding company	17.9%	5	+6.4%	0
Adviser	0.0%	0	—	0
Insurer	0.0%	0	—	0
Benefit plan	0.0%	0	—	0
Unknown	1.4%	6	-91.1%	4

Style	Share	Filers	Change	Exited
Index-like	30.1%	10	+4.9%	0
Systematic-like	1.4%	6	-54.8%	1
Concentrated	52.3%	7	-23.3%	3
Diversified active	16.2%	24	-4.4%	5
Not measured	0.0%	0	—	0
Unknown	0.0%	0	—	0

Turnover	Share	Filers	Change	Exited
Low turnover	58.9%	28	-1.8%	4
Medium turnover	31.0%	8	-0.4%	0
High turnover	1.4%	7	-61.1%	4
Unknown	8.7%	4	-60.9%	1
Not measured	0.0%	0	—	0

Holding horizon	Share	Filers	Change	Exited
Short horizon	9.0%	6	-63.8%	3
Medium horizon	1.4%	3	+11.9%	1
Long horizon	79.6%	35	-1.7%	5
Unknown	10.1%	3	+1.5%	0
Not measured	0.0%	0	—	0

13F book size	Share	Filers	Change	Exited
Under $1B	20.1%	6	-44.1%	2
$1B to $10B	12.5%	12	-4.1%	4
$10B to $100B	52.0%	7	+2.3%	1
$100B or more	15.4%	22	-9.8%	2
Not measured	0.0%	0	—	0

Client base	Share	Filers	Change	Exited
Individuals and high net worth	1.9%	11	-3.7%	1
Pooled investment vehicles	63.4%	8	-3.3%	2
Registered funds and BDCs	10.2%	4	+5.3%	1
Pension and profit sharing plans	3.4%	3	-0.2%	0
Other investment advisers	0.0%	0	—	0
Insurance companies	0.0%	0	—	0
Governments and sovereign funds	0.0%	0	—	0
Diversified	0.0%	0	—	0
Unknown	21.2%	21	-41.8%	5

Private funds	Share	Filers	Change	Exited
Hedge funds	53.9%	8	-3.5%	2
Private equity funds	10.0%	2	0.0%	0
Other private funds	4.3%	6	+2.7%	0
Mixed private funds	0.0%	0	—	0
No private funds	10.9%	11	+3.0%	2
Real estate funds	0.0%	0	—	0
Private funds, type not stated	0.0%	0	—	0
Securitized asset funds	0.0%	0	—	0
Unknown	20.9%	20	-42.4%	5

Location	Share	Filers	Change	New	Exited
United States	83.1%	38	-17.5%	0	7
Outside the US	16.9%	9	+4.0%	0	2

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

47 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 2

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

—

the issuer has more than one class of common stock, so its count is the total across classes

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

the issuer has more than one class of common stock, so its count is the total across classes

Top 10 holders

93.8%

of 13F shares, Herfindahl 0.185

Active holders

-20.8%

like-for-like share change of active filers

5% stakes on record

2 13D, 3 13G (1 institutional, 1 passive, 1 exempt)

How long holders have held it value-weighted 12.3 quarters

Under 1 year 9.22% 1 to 3 years 41.0% 3 years or more 49.8% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $4,756,453 (0 buying, 1 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$4.09

estimated per share

Mar 31, 2026: $3.92

Quarter-end price

$1.82

implied by 13F values

Estimated gain or loss

-55.5%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 91.3% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies SERA's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	MO Altria Group, Inc.	3	0.031
2	TSM Taiwan Semiconductor Manufacturing Co Ltd	4	0.030
3	ASML Asml Holding NV	3	0.028
4	NEE Nextera Energy Inc	3	0.026
5	JNJ Johnson & Johnson	4	0.025
6	GS Goldman Sachs Group Inc	3	0.024
7	LRCX Lam Research Corp	3	0.024
8	ORCL Oracle Corp	3	0.023
9	BAC Bank Of America Corp	3	0.022
10	KO Coca Cola Co	3	0.022

Shareholder Targets

13F filers that own its peers but not SERA, quarter ended Jun 30, 2026

Found through its holder-overlap peers: MO, TSM, ASML, NEE, JNJ, GS, LRCX, ORCL, BAC, KO, NVDA, AMZN, GOOGL, MU, AMD, HD, TSLA, XOM, V, LLY. 7,256 filers in all.

#	Filer	In peers	Of book	Largest peers
1	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$403,530,673,553 19 held	18.2%	NVDA, GOOGL, AMZN
2	Invesco Ltd. Adviser, Diversified active	$308,719,790,576 20 held	24.5%	NVDA, GOOGL, MU
3	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$283,355,371,453 20 held	28.4%	NVDA, GOOGL, AMZN
4	NORGES BANK Non-US, Index-like	$267,964,126,407 19 held	26.7%	NVDA, GOOGL, AMZN
5	Capital World Investors Adviser, Diversified active	$210,359,497,596 20 held	24.9%	GOOGL, MU, NVDA
6	BANK OF AMERICA CORP /DE/ Bank, Diversified active	$200,691,264,694 20 held	13.0%	NVDA, GOOGL, AMZN
7	Capital Research Global Investors Adviser, Diversified active	$176,488,305,535 20 held	24.7%	NVDA, GOOGL, AMZN
8	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser, Index-like	$153,129,422,701 20 held	27.9%	NVDA, GOOGL, AMZN
9	CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser, Diversified active	$147,648,910,587 20 held	19.7%	NVDA, GOOGL, AMZN
10	Legal & General Group Plc Unknown, Index-like	$126,573,530,618 20 held	26.4%	NVDA, GOOGL, AMZN

Fund Ownership of SERA by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 4.32% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.85%	+0.09 pp	335,721	9
Index ETFs	3.47%	+0.25 pp	1,369,587	3
Active ETFs	0.00%	-0.01 pp	0	0
Active funds	7.15%	+0.50 pp	2,819,548	7
Unclassified	0.01%	+0.01 pp	5,403	1
All registered funds	11.48%	+0.84 pp	4,530,259	20

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 29 Exempt adviser 1 Bank 7 Broker-dealer 1 Non-US 2 Holding company 5 Unknown 7

Showing 52 of 52

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BAKER BROS. ADVISORS LP

$10,006,669

27.20%

5,498,170

Whetstone Capital Advisors, LLC

$6,018,537

16.36%

3,306,889

Aberdeen Group plc

$5,011,415

13.62%

2,753,525

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
abrdn Inc.	2,753,525	$5,011,415	100.0%	Defined

PSP Research LLC

$5,009,071

13.62%

2,396,685

Vivo Capital, LLC

$3,003,800

8.17%

1,650,440

VANGUARD CAPITAL MANAGEMENT LLC

$2,361,981

6.42%

1,297,792

CAPTRUST FINANCIAL ADVISORS

$975,074

2.65%

535,755

SANDERS MORRIS HARRIS LLC

$658,245

1.79%

314,950

GEODE CAPITAL MANAGEMENT, LLC

$635,119

1.73%

348,967

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	69,040	$125,652	19.8%	Defined
Held directly	279,927	$509,467	80.2%	Defined

BlackRock, Inc.

$402,890

1.10%

221,369

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	6,973	$12,690	3.1%	Sole
BlackRock Fund Advisors	102,359	$186,293	46.2%	Sole
BlackRock Institutional Trust Company, N.A.	112,037	$203,907	50.6%	Sole

AWM Investment Company, Inc.

$377,435

1.03%

207,382

VANGUARD FIDUCIARY TRUST CO

$311,052

0.85%

170,908

STATE STREET CORP

$227,121

0.62%

124,792

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	124,792	$227,121	100.0%	Defined

Perigon Wealth Management, LLC

$151,911

0.41%

72,685

MILLENNIUM MANAGEMENT LLC

$134,654

0.37%

73,986

NORTHERN TRUST CORP

$124,842

0.34%

68,595

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	68,595	$124,842	100.0%	Defined

Bank of New York Mellon Corp

$110,886

0.30%

60,927

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
The Bank of New York Mellon	1,967	$3,579	3.2%	Defined
Newton Investment Management North America, LLC	58,960	$107,307	96.8%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$101,383

0.28%

55,705

Requisite Capital Management, LLC

$101,279

0.28%

55,648

MORGAN STANLEY

$92,769

0.25%

50,972

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	50,972	$92,769	100.0%	Defined

Qube Research & Technologies Ltd

$92,585

0.25%

50,871

Ballentine Partners, LLC

$90,388

0.25%

49,664

Twelve Points Wealth Management LLC

$78,966

0.21%

43,388

HighTower Advisors, LLC

$76,865

0.21%

42,234

CITADEL ADVISORS LLC

$75,368

0.20%

41,411

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	41,411	$75,368	100.0%	Defined

Catalyst Funds Management Pty Ltd

$70,779

0.19%

38,890

GOLDMAN SACHS GROUP INC

$59,224

0.16%

32,541

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	32,541	$59,224	100.0%	Defined

Birch Hill Investment Advisors LLC

$57,042

0.16%

27,293

DIMENSIONAL FUND ADVISORS LP

$53,687

0.15%

29,499

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	3,634	$6,613	12.3%	Defined
Dimensional Ireland Ltd	2,332	$4,244	7.9%	Defined
Held directly	23,533	$42,830	79.8%	Sole

Cetera Investment Advisers

$45,500

0.12%

25,000

XTX Topco Ltd

$30,590

0.08%

16,808

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	16,808	$30,590	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$29,522

0.08%

16,221

Wagner Wealth Management, LLC

$25,916

0.07%

12,400

Riverview Capital Advisers, LLC

$23,057

0.06%

12,669

DIVERSIFY WEALTH MANAGEMENT, LLC

$22,135

0.06%

10,591

Diversify Advisory Services, LLC

$22,135

0.06%

10,591

Focus Partners Wealth

$22,123

0.06%

12,156

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$21,945

0.06%

10,500

UBS Group AG

$20,581

0.06%

11,309

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	11,269	$20,509	99.7%	Defined
UBS Securities LLC	40	$72	0.3%	Defined

Vanguard Global Advisers, LLC

$20,327

0.06%

11,169

Geneos Wealth Management Inc.

$19,656

0.05%

10,800

BARCLAYS PLC

$5,785

0.02%

3,179

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	3,179	$5,785	100.0%	Defined

FMR LLC

$4,620

0.01%

2,539

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	2,539	$4,620	100.0%	Defined

Global Retirement Partners, LLC

$1,820

0.00%

1,000

TOTH FINANCIAL ADVISORY CORP

$532

0.00%

255

JPMORGAN CHASE & CO

$404

0.00%

222

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities plc	222	$404	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$338

0.00%

186

NISA INVESTMENT ADVISORS, LLC

$269

0.00%

129

Silicon Valley Capital Partners

$103

0.00%

ROYAL BANK OF CANADA

$81

0.00%

SBI Securities Co., Ltd.

0.00%

Caitong International Asset Management Co., Ltd

0.00%

Key facts CIK 1534969 CUSIP 81749D107 13F (30d) 11 filings 11 filers Visit website Investor relations