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EQ · Equillium, Inc. · Holdings

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$1.42 +0.06 (+4.41%) At close · Oct 28
Rebalance outlook locked
Market Cap
$86.23M
Shares
63.41M
Volume · Oct 28 227.36K Avg daily vol (3M) 579.9K

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 EQ: 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.
Holders: 60
Total Value: $133,961,303
Total Shares: 41,886,127

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 60 13F filers
Top Holder
15.5%
Sep 2023 → Jun 2026 · range 15.5% – 51.3%
of institutional value
Top 5
53.6%
Sep 2023 → Jun 2026 · range 53.6% – 91.8%
of institutional value
Top 10
82.1%
Sep 2023 → Jun 2026 · range 82.1% – 97.9%
of institutional value
HHI
807
Sep 2023 → Jun 2026 · range 807 – 3,227
Broadly held

Who Holds EQ

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: 60 filers, like-for-like change +2.7%; actively managed books +1.8%; index-like books +8.1%.

Holder type Share Filers Change
Registered adviser 61.2% 29 +3.3%
Exempt adviser 0.2% 1 -39.2%
Adviser 0.1% 1 new
Bank 0.8% 6 +30.2%
Broker-dealer 0.0% 1 -82.2%
Non-US 0.0% 1 -47.3%
Holding company 9.6% 4 +13.8%
Benefit plan 0.0% 0 -100.0%
Insurer 0.0% 0 —
Unknown 28.1% 17 -1.5%

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.

Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

60 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
1
1.67% of filers hold it in their top 10
Mar 31, 2026: 1
Holders above 5%
0
median weight 0.001%
Mar 31, 2026: 0
Crowding
37.4%
of shares outstanding, 90th percentile
Mar 31, 2026: 36.6%
Private-fund advisers
36.8%
of shares outstanding
Institutional ownership
65.8%
66.8% of the estimated free float
Top 10 holders
82.7%
of 13F shares, Herfindahl 0.082
Active holders
+1.8%
like-for-like share change of active filers
5% stakes on record
9
0 13D, 9 13G (6 institutional, 2 passive, 1 exempt)
How long holders have held it value-weighted 4.0 quarters
Under 1 year 51.6% 1 to 3 years 45.4% 3 years or more 3.04% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $80,413 (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
$1.55
estimated per share
Mar 31, 2026: $1.28
Quarter-end price
$3.20
implied by 13F values
Estimated gain or loss
+107.0%
price against the estimated cost
Estimated at a loss
1.29%
of costed 13F value

Estimated cost covers 84.5% 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 EQ's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 SPRB Spruce Biosciences, Inc. 5
2 AMAN Amanat Acquisition Corp. 4
3 MNPR Monopar Therapeutics 5
4 NXTC NextCure, Inc. 3
5 JATT JATT II Acquisition Corp. 4
6 OVID Ovid Therapeutics Inc. 5
7 PRQR ProQR Therapeutics N.V. 5
8 CLYM Climb Bio, Inc. 5
9 MGNX Macrogenics Inc 3
10 ELVN Enliven Therapeutics, Inc. 8

Shareholder Targets

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

Found through its holder-overlap peers: SPRB, AMAN, MNPR, NXTC, JATT, OVID, PRQR, CLYM, MGNX, ELVN, AVR, CUE, PRLD, PEPG, KPTI, DMRA, LXEO, ABOS, HLXC, SABS. 472 filers in all.

# Filer In peers
1 FMR LLC Holding company, Diversified active $906,473,119 14 held
2 ORBIMED ADVISORS LLC Registered adviser, Diversified active $462,828,503 6 held
3 Polar Capital Holdings Plc Registered adviser, Diversified active $346,212,461 2 held
4 Fairmount Funds Management LLC Registered adviser, Concentrated $320,799,063 2 held
5 Vestal Point Capital, LP Registered adviser, Diversified active $255,025,412 5 held
6 Commodore Capital LP Registered adviser, Concentrated $241,207,640 5 held
7 PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active $178,871,566 12 held
8 Siren, L.L.C. Unknown, Diversified active $138,470,583 3 held
9 Venrock Adviser, LLC Registered adviser, Concentrated $120,440,803 2 held
10 Bellevue Group AG Non-US, Diversified active $117,723,684 2 held

Fund Ownership of EQ by Fund Type

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

Index funds and index ETFs hold 3.54% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.55% 350,965
Index ETFs 2.99% 1,894,144
Active ETFs 0.01% 7,665
Active funds 5.80% 3,680,522
Unclassified 0.02% 10,623
All registered funds 9.37% 5,943,919
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 Adviser 1 Bank 6 Broker-dealer 1 Non-US 1 Holding company 4 Unknown 17
Showing 65 of 65
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Jupiter Topco LLC $20,782,627 15.51% 6,494,571
Decheng Capital LLC $14,231,385 10.62% 4,447,308
Affinity Asset Advisors, LLC $13,120,000 9.79% 4,100,000
ADAR1 Capital Management, LLC $12,027,420 8.98% 3,758,569
Aberdeen Group plc $11,621,308 8.68% 3,631,659
Woodline Partners LP $11,202,883 8.36% 3,500,901
RA CAPITAL MANAGEMENT, L.P. $9,908,275 7.40% 3,096,336
STEMPOINT CAPITAL LP $6,453,142 4.82% 2,016,607
VANGUARD CAPITAL MANAGEMENT LLC $5,832,998 4.35% 1,822,812
Eversept Partners, LP $4,866,636 3.63% 1,520,824
ADAGE CAPITAL PARTNERS GP, L.L.C. $4,448,809 3.32% 1,390,253
RENAISSANCE TECHNOLOGIES LLC $2,040,374 1.52% 637,617
Exome Asset Management LLC $1,769,459 1.32% 552,956
DG Capital Management, LLC $1,482,867 1.11% 463,396
DIADEMA PARTNERS LP $1,280,902 0.96% 400,282
GEODE CAPITAL MANAGEMENT, LLC $1,219,759 0.91% 381,175
Balyasny Asset Management L.P. $1,102,108 0.82% 344,409
TUDOR INVESTMENT CORP ET AL $1,024,320 0.76% 320,100
Ikarian Capital, LLC $971,376 0.73% 303,555
BlackRock, Inc. $913,308 0.68% 285,409
BOOTHBAY FUND MANAGEMENT, LLC $909,856 0.68% 284,330
TWO SIGMA INVESTMENTS, LP $661,929 0.49% 206,853
VANGUARD FIDUCIARY TRUST CO $610,592 0.46% 190,810
STATE STREET CORP $556,992 0.42% 174,060
SUSQUEHANNA INTERNATIONAL GROUP, LLP $478,080 0.36% 149,400
CANTOR FITZGERALD, L. P. $348,998 0.26% 109,062
Persistent Asset Partners Ltd $326,432 0.24% 102,010
CITADEL ADVISORS LLC $318,918 0.24% 99,662
JANE STREET GROUP, LLC $304,684 0.23% 95,214
Soleus Capital Management, L.P. $288,000 0.21% 90,000
RAYMOND JAMES FINANCIAL INC $240,832 0.18% 75,260
NORTHERN TRUST CORP $228,988 0.17% 71,559
AlphaCore Capital LLC $167,504 0.13% 52,345
JANE STREET GROUP, LLC $149,440 0.11% 46,700
ExodusPoint Capital Management, LP $141,404 0.11% 44,189
JANE STREET GROUP, LLC $141,120 0.11% 44,100
MILLENNIUM MANAGEMENT LLC $137,081 0.10% 42,838
XTX Topco Ltd $125,641 0.09% 39,263
Invesco Ltd. $116,131 0.09% 36,291
BARCLAYS PLC $112,000 0.08% 35,000
SUSQUEHANNA INTERNATIONAL GROUP, LLP $111,040 0.08% 34,700
Jefferies Financial Group Inc. $109,120 0.08% 34,100
CITIGROUP INC $104,624 0.08% 32,695
MORGAN STANLEY $95,637 0.07% 29,887
Quadrature Capital Ltd $91,696 0.07% 28,655
HRT FINANCIAL LP $86,329 0.06% 26,978
AMERICAN CENTURY COMPANIES INC $82,864 0.06% 25,895
China Universal Asset Management Co., Ltd. $80,000 0.06% 25,000
UBS Group AG $73,382 0.05% 22,932
SUSQUEHANNA INTERNATIONAL GROUP, LLP $67,875 0.05% 21,211
High Net Worth Advisory Group LLC $53,998 0.04% 33,230
Chung Wu Investment Group, LLC $52,800 0.04% 16,500
CITADEL ADVISORS LLC $52,480 0.04% 16,400
DIMENSIONAL FUND ADVISORS LP $49,065 0.04% 15,333
Coastal Bridge Advisors, LLC $48,000 0.04% 15,000
Focus Partners Wealth $41,641 0.03% 13,013
TWO SIGMA SECURITIES, LLC $34,550 0.03% 10,797
Apollon Wealth Management, LLC $22,546 0.02% 13,875
Vanguard Global Advisers, LLC $18,643 0.01% 5,826
Tower Research Capital LLC (TRC) $7,632 0.01% 2,385
GROUP ONE TRADING LLC $7,161 0.01% 2,238
WELLS FARGO & COMPANY/MN $3,200 0.00% 1,000
JONES FINANCIAL COMPANIES LLLP $1,600 0.00% 500
Caitong International Asset Management Co., Ltd $748 0.00% 234
SBI Securities Co., Ltd. $94 0.00% 58
Key facts CIK 1746466 CUSIP 29446K106 13F (30d) 3 filings 3 filers Visit website Investor relations