Security Snapshot

Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ) Institutional Ownership

CUSIP: 29446K106

13F Institutional Holders and Ownership History from Q4 2018 to Q3 2026

13F reference period

Q3 2026

Institutions Reporting

30

Shares (Excl. Options)

16.82MFull value: 16,822,451 · shares · 30 Sep 2026

Price

$1.62

The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Security type / class
Equity / Common Stock, par value $0.0001 per share
Symbol
EQ on Nasdaq
All holders as of 30 Sep 2026
Q3 2026
Total 13F shares
16,822,451
Latest holder snapshot 5 signals
Total 13F value
$27,340,223
Portfolio coverage rank
0%
Share change
+618,173
Value change
+$983,994
Number of holders
30
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
63,754,976
SEC-reported price per share
$1.42
Insider filing price
$1.42
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • EQ - Equillium, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 29446K106.
  • 30 institutions reported positions in Q3 2026.
  • 8 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 60 to 30 between Q2 2026 and Q3 2026.
  • SEC-reported value moved from
    $133.01MFull value: $133,007,116 · USD · 30 Jun 2026
    to
    $27.34MFull value: $27,340,223 · USD · 30 Sep 2026
    .

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

Latest holder context comes from 30 institutions filings for Q3 2026.

Open SEC evidence

Security key

29446K106

13F reference period

Q3 2026

13F holders

30

13D/G owners

8

CIK / CUSIP context first

Open Q3 2026 holders EQ full holder history Equillium, Inc. SEC filings Equillium, Inc. company facts Equillium, Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
8
Security
EQ
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
ADAR1 Capital Management, LLC 9.9% 0% $13,735,808 +$850,454 6,603,754 +6.6% ADAR1 Capital Management, LLC 31 Mar 2026
RA CAPITAL MANAGEMENT, L.P. 9.9% $11,275,564 6,480,209 RA Capital Management, L.P. 13 Mar 2026
JANUS HENDERSON GROUP PLC 10% 0% $9,429,020 6,083,239 0% JANUS HENDERSON GROUP PLC 30 Jan 2026
Decheng Capital Management IV (Cayman), LLC 8.9% $10,950,070 5,733,021 Xiangmin Cui 31 Mar 2026
Aberdeen Group plc 7% +35% $6,330,858 +$1,569,830 4,458,351 +33% Aberdeen Group plc 30 Sep 2026
Adage Capital Management, L.P. 5.9% -19% $5,633,022 -$1,229,507 3,966,917 -18% Adage Capital Management, L.P. 30 Sep 2026
Woodline Partners LP 5.9% $5,016,841 3,508,771 Woodline Partners LP 30 Sep 2025
Affinity Asset Advisors, LLC 4.1% -34% $3,711,815 -$2,110,185 2,613,954 -36% Affinity Asset Advisors, LLC 30 Sep 2026
As of 30 Sep 2026, 30 institutional investors reported holding
16.82MFull value: 16,822,451 · shares · 30 Sep 2026
shares of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ). This represents 26% of the company’s total
63.75MFull value: 63,754,976 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
26%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Aberdeen Group plc 7% 4,458,351 +23% 0.01% $7,244,820
Decheng Capital LLC 7% 4,447,308 0% 1.1% $7,226,876
Affinity Asset Advisors, LLC 4.1% 2,613,954 -36% 0.24% $4,247,675
VANGUARD CAPITAL MANAGEMENT LLC 3.2% 2,013,744 +10% 0% $3,272,334
MARSHALL WACE, LLP 1.2% 750,188 0% $1,222,806
DG Capital Management, LLC 0.75% 480,166 +3.6% 0.28% $780,270
GEODE CAPITAL MANAGEMENT, LLC 0.74% 471,555 +24% 0% $766,584
RENAISSANCE TECHNOLOGIES LLC 0.7% 446,691 -30% 0% $725,873
VANGUARD FIDUCIARY TRUST CO 0.47% 301,330 +58% 0% $489,661
STATE STREET CORP 0.31% 198,060 +14% 0% $321,848
Integrated Quantitative Investments LLC 0.2% 126,010 0.04% $204,766
Quadrature Capital Ltd 0.12% 76,322 +166% 0% $124,023
AMERICAN CENTURY COMPANIES INC 0.12% 75,411 +191% 0% $122,543
China Universal Asset Management Co., Ltd. 0.1% 64,000 +156% 0.01% $103,680
Invesco Ltd. 0.08% 53,227 +47% 0% $86,494
Jefferies Financial Group Inc. 0.05% 34,100 0% 0% $55,413
High Net Worth Advisory Group LLC 0.05% 33,230 -0.81% 0.01% $53,999
Qube Research & Technologies Ltd 0.04% 25,695 0% $41,754
Vanguard Global Advisers, LLC 0.03% 20,044 +244% 0% $32,572
Hudson Bay Capital Management LP 0.03% 18,260 0% $29,673
Chung Wu Investment Group, LLC 0.03% 16,500 0% 0.02% $26,813
Focus Partners Wealth 0.03% 16,013 +23% 0% $26,021
MORGAN STANLEY 0.02% 15,842 -47% 0% $25,743
Apollon Wealth Management, LLC 0.02% 13,875 0% 0% $22,547
RAYMOND JAMES FINANCIAL INC 0.02% 13,500 -82% 0% $21,938

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
32
Headline period
Q3 2026
Rows shown
1-25 of 32
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 16,822,451 $27,340,223 +$983,994 $1.62 30
2026 Q2 41,595,107 $133,007,116 +$4,195,621 $3.20 60
2026 Q1 40,498,666 $80,965,178 +$10,370,999 $2.00 49
2025 Q4 35,287,993 $54,667,551 +$11,793,365 $1.55 36
2025 Q3 29,653,795 $42,404,231 +$30,732,112 $1.43 40
2025 Q2 8,709,051 $2,740,934 +$38,410 $0.32 27
2025 Q1 8,659,890 $3,389,920 -$48,129 $0.39 23
2024 Q4 8,704,762 $6,515,281 -$14,852 $0.75 25
2024 Q3 8,717,452 $7,247,939 -$126,669 $0.83 24
2024 Q2 8,887,474 $6,151,871 -$260,570 $0.69 24
2024 Q1 8,889,978 $20,532,946 -$656,679 $2.31 27
2023 Q4 9,477,671 $6,846,361 -$1,084,753 $0.72 24
2023 Q3 9,120,275 $6,748,461 -$594,650 $0.74 24
2023 Q2 9,919,159 $7,438,644 -$617,047 $0.75 26
2023 Q1 10,767,194 $7,860,967 -$1,139,318 $0.73 28
2022 Q4 12,212,724 $13,289,778 -$1,560,151 $1.06 30
2022 Q3 12,724,210 $28,246,000 +$582,554 $2.22 27
2022 Q2 12,629,706 $25,583,000 -$257,683 $2.04 22
2022 Q1 12,553,433 $39,542,748 +$2,879,189 $3.15 28
2021 Q4 7,190,498 $27,020,558 -$550,876 $3.77 24
2021 Q3 7,322,408 $49,936,820 +$1,714,580 $6.82 21
2021 Q2 7,108,446 $41,871,000 -$4,504,229 $5.89 25
2021 Q1 7,631,947 $54,570,000 +$5,601,671 $7.15 31
2020 Q4 6,915,024 $36,999,000 -$4,859,884 $5.35 37
2020 Q3 7,698,536 $44,420,770 +$25,109,028 $5.77 29
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