ACRV · Acrivon Therapeutics, Inc. · Holdings

$1.80 +0.11 (+6.21%) At close · Oct 20

Market Cap

$76.74M

42.85M

Volume · Oct 20 185.41K Avg daily vol (3M) 316.74K

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 ACRV: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

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: 46

Total Value: $38,096,682

Total Shares: 21,402,557

Institutional Ownership Trend

16 quarters

Holder Concentration

Across 46 13F filers

Top Holder

57.1%

of institutional value

Top 5

81.9%

of institutional value

Top 10

93.9%

of institutional value

HHI

3,482

Highly concentrated

Who Holds ACRV

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: 46 filers, like-for-like change +31.8%; actively managed books +32.5%; index-like books +24.4%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	83.5%	17	+37.0%	2	2
Exempt adviser	2.5%	1	-5.1%	0	0
Adviser	0.0%	1	0.0%	0	0
Bank	0.9%	8	+14.7%	1	1
Non-US	0.0%	2	-13.6%	0	0
Holding company	5.4%	5	-0.3%	0	0
Broker-dealer	0.0%	0	—	0	0
Insurer	0.0%	0	—	0	0
Benefit plan	0.0%	0	—	0	0
Unknown	7.7%	12	+26.5%	3	1

Style	Share	Filers	Change	New	Exited
Index-like	8.4%	9	+24.4%	0	0
Systematic-like	7.6%	8	+28.4%	1	1
Concentrated	68.0%	6	+39.0%	2	0
Diversified active	16.0%	23	+12.1%	3	3
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	71.2%	21	+36.9%	1	1
Medium turnover	15.4%	11	+19.4%	2	1
High turnover	8.0%	11	+13.7%	2	1
Unknown	5.4%	3	+38.0%	1	1
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	7.1%	6	+40.7%	1	1
Medium horizon	12.0%	7	+9.2%	2	0
Long horizon	75.2%	29	+36.3%	2	2
Unknown	5.6%	4	+22.5%	1	1
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	11.0%	7	+9.9%	3	0
$1B to $10B	3.7%	6	+73.0%	0	1
$10B to $100B	68.8%	11	+39.0%	1	1
$100B or more	16.6%	22	+16.1%	2	2
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.1%	3	0.0%	0	0
Pooled investment vehicles	75.8%	9	+36.9%	2	1
Registered funds and BDCs	7.6%	4	+43.1%	0	0
Pension and profit sharing plans	0.0%	1	0.0%	0	0
Governments and sovereign funds	0.0%	0	-100.0%	0	1
Diversified	0.0%	0	—	0	0
Insurance companies	0.0%	0	—	0	0
Other investment advisers	0.0%	0	—	0	0
Unknown	16.5%	29	+10.6%	4	2

Private funds	Share	Filers	Change	New	Exited
Hedge funds	10.5%	9	+13.1%	2	1
Private equity funds	10.7%	1	+7.9%	0	0
Venture capital funds	57.1%	1	+46.6%	0	0
Other private funds	1.9%	2	+130.3%	0	0
No private funds	5.7%	5	+26.1%	0	1
Real estate funds	0.0%	0	—	0	0
Private funds, type not stated	0.0%	0	—	0	0
Securitized asset funds	0.0%	0	—	0	0
Unknown	14.0%	28	+13.9%	4	2

Location	Share	Filers	Change	New	Exited
United States	95.5%	36	+33.0%	6	4
Outside the US	4.5%	10	+11.1%	0	0

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.

Conviction and Crowding

46 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: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

40.7%

of shares outstanding, 93rd percentile

Mar 31, 2026: 33.4%

Private-fund advisers

40.1%

of shares outstanding

Institutional ownership

50.0%

58.1% of the estimated free float

Top 10 holders

93.9%

of 13F shares, Herfindahl 0.348

Active holders

+32.5%

like-for-like share change of active filers

5% stakes on record

1 13D, 3 13G (0 institutional, 3 passive, 0 exempt)

How long holders have held it value-weighted 12.7 quarters

Under 1 year 6.86% 1 to 3 years 16.6% 3 years or more 76.5% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $48,073 (1 buying, 0 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

$7.29

estimated per share

Mar 31, 2026: $9.06

Quarter-end price

$1.78

implied by 13F values

Estimated gain or loss

-75.6%

price against the estimated cost

Estimated at a loss

90.0%

of costed 13F value

Estimated cost covers 94.7% 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 ACRV's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	ABOS Acumen Pharmaceuticals, Inc.	3	0.500

Shareholder Targets

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

Found through its holder-overlap peers: ABOS. 61 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Alyeska Investment Group, L.P. Registered adviser, Systematic-like	$6,554,193 1 held	0.020%	ABOS
2	FRANKLIN RESOURCES INC Adviser, Diversified active	$6,154,606 1 held	0.000%	ABOS
3	ADAR1 Capital Management, LLC Registered adviser, Diversified active	$5,637,261 1 held	0.270%	ABOS
4	Knollwood Investment Advisory, LLC Adviser, Diversified active	$4,348,121 1 held	0.390%	ABOS
5	Ikarian Capital, LLC Registered adviser, Diversified active	$2,813,637 1 held	0.460%	ABOS
6	Hudson Bay Capital Management LP Registered adviser, Diversified active	$2,549,850 1 held	0.010%	ABOS
7	Pathstone Holdings, LLC Unknown, Diversified active	$2,293,823 1 held	0.010%	ABOS
8	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$856,522 1 held	0.000%	ABOS
9	BOOTHBAY FUND MANAGEMENT, LLC Registered adviser, Systematic-like	$728,942 1 held	0.010%	ABOS
10	NOMURA HOLDINGS INC Unknown, Diversified active	$506,531 1 held	0.000%	ABOS

Fund Ownership of ACRV by Fund Type

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

Index funds and index ETFs hold 2.82% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.47%	+0.05 pp	199,722	6
Index ETFs	2.35%	+0.56 pp	1,008,985	3
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.89%	+0.52 pp	381,441	4
Unclassified	0.00%	0.00 pp	0	0
All registered funds	3.71%	+1.13 pp	1,590,148	13

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 17 Exempt adviser 1 Adviser 1 Bank 8 Non-US 2 Holding company 5 Unknown 12

Showing 46 of 46

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

RA CAPITAL MANAGEMENT, L.P.

$21,768,324

57.14%

12,229,396

Sands Capital Alternatives, LLC

$4,074,902

10.70%

2,289,271

ACADIAN ASSET MANAGEMENT LLC

$2,073,911

5.44%

1,165,119

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

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,165,119	$2,073,911	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$1,694,574

4.45%

952,008

WELLINGTON MANAGEMENT GROUP LLP

$1,580,871

4.15%

888,130

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

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	888,130	$1,580,871	100.0%	Defined

RENAISSANCE TECHNOLOGIES LLC

$1,350,776

3.55%

758,863

TWO SIGMA INVESTMENTS, LP

$1,141,866

3.00%

641,498

MARSHALL WACE, LLP

$946,702

2.48%

531,856

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

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	531,856	$946,702	100.0%	Other

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$674,442

1.77%

378,900

GEODE CAPITAL MANAGEMENT, LLC

$472,128

1.24%

265,241

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	40,817	$72,654	15.4%	Defined
Held directly	224,424	$399,474	84.6%	Defined

BlackRock, Inc.

$425,617

1.12%

239,112

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

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	10,603	$18,873	4.4%	Sole
BlackRock Investment Management, LLC	20,220	$35,991	8.5%	Sole
BlackRock Fund Advisors	73,869	$131,486	30.9%	Sole
BlackRock Institutional Trust Company, N.A.	134,420	$239,267	56.2%	Sole

GSA CAPITAL PARTNERS LLP

$356,738

0.94%

200,415

VANGUARD FIDUCIARY TRUST CO

$327,747

0.86%

184,128

XTX Topco Ltd

$317,265

0.83%

178,239

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	178,239	$317,265	100.0%	Defined

JANE STREET GROUP, LLC

$132,872

0.35%

74,648

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	66,205	$117,844	88.7%	Defined
Jane Street Global Trading, LLC	8,443	$15,028	11.3%	Defined

NORTHERN TRUST CORP

$119,619

0.31%

67,202

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	67,202	$119,619	100.0%	Defined

STATE STREET CORP

$119,518

0.31%

67,145

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	67,145	$119,518	100.0%	Defined

UBS Group AG

$78,052

0.20%

43,850

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	36,705	$65,334	83.7%	Defined
UBS Securities LLC	7,145	$12,718	16.3%	Defined

CITADEL ADVISORS LLC

$73,471

0.19%

41,276

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	41,276	$73,471	100.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$52,209

0.14%

29,332

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.	1,702	$3,029	5.8%	Defined
Dimensional Ireland Ltd	13,829	$24,615	47.1%	Defined
Held directly	13,801	$24,565	47.1%	Sole

Spark Investment Management LLC

$50,374

0.13%

28,300

PRELUDE CAPITAL MANAGEMENT, LLC

$42,746

0.11%

24,015

BANK OF AMERICA CORP /DE/

$29,204

0.08%

16,407

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

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	16,407	$29,204	100.0%	Defined

Verdad Advisers, LP

$26,796

0.07%

15,054

GOLDMAN SACHS GROUP INC

$26,557

0.07%

14,920

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

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	14,920	$26,557	100.0%	Defined

Squarepoint Ops LLC

$23,690

0.06%

13,309

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

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	13,309	$23,690	100.0%	Defined

AAF Wealth Management, LLC

$19,006

0.05%

10,678

HRT FINANCIAL LP

$18,362

0.05%

10,316

Marex Group plc

$17,800

0.05%

10,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Marex Financial	10,000	$17,800	100.0%	Defined

FEDERATED HERMES, INC.

$14,104

0.04%

7,924

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

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED MDTA LLC	7,924	$14,104	100.0%	Defined

BARCLAYS PLC

$13,089

0.03%

7,354

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	5,940	$10,573	80.8%	Defined
BARCLAYS CAPITAL INC.	1,414	$2,516	19.2%	Defined

FMR LLC

$12,383

0.03%

6,957

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	6,957	$12,383	100.0%	Defined

MORGAN STANLEY

$9,314

0.02%

5,233

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	861	$1,532	16.4%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	4,372	$7,782	83.6%	Defined

Tower Research Capital LLC (TRC)

$2,985

0.01%

1,677

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

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,677	$2,985	100.0%	Defined

Crews Bank & Trust

$1,858

0.00%

1,044

JPMORGAN CHASE & CO

$1,335

0.00%

751

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

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	131	$233	17.5%	Defined
J.P. Morgan Securities LLC	528	$939	70.3%	Defined
J.P. Morgan Securities plc	92	$163	12.2%	Defined

NISA INVESTMENT ADVISORS, LLC

$1,197

0.00%

584

BNP PARIBAS ARBITRAGE, SA

$955

0.00%

537

Redwood Park Advisors LLC

$890

0.00%

500

Russell Investments Group, Ltd.

$856

0.00%

481

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

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	481	$856	100.0%	Defined

Federation des caisses Desjardins du Quebec

$712

0.00%

400

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

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	400	$712	100.0%	Defined

Steward Partners Investment Advisory, LLC

$580

0.00%

326

SBI Securities Co., Ltd.

$133

0.00%

Caitong International Asset Management Co., Ltd

$89

0.00%

ROYAL BANK OF CANADA

$53

0.00%

CITIGROUP INC

$10

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	6	$10	100.0%	Defined

Key facts CIK 1781174 CUSIP 004890109 13F (30d) 2 filings 2 filers Visit website Investor relations