Latest Period
Q1 2026
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 Q1 2026
Institutions Reporting
49
Shares (Excl. Options)
40,498,666
Price
$2.00
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- EQ on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 40,498,666
- Total 13F value
- $80,965,178
- Portfolio coverage rank
- 0%
- Share change
- +5,151,268
- Value change
- +$10,370,999
- Number of holders
- 49
- Shares outstanding
- 66,704,586
- SEC-reported price per share
- $2.31
- Insider filing price
- $2.31
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
- EQ - Equillium, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 29446K106.
- 49 institutions reported positions in Q1 2026.
- 7 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 36 to 49 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $54,667,551 to $80,965,178.
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 49 institutions filings for Q1 2026.
Security key
29446K106
Latest holder period
Q1 2026
13F holders
49
13D/G owners
7
CIK / CUSIP context first
Open Q1 2026 holders
EQ full holder history
Equillium, Inc. SEC filings
Equillium, Inc. company facts
Equillium, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 29446K106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
7
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 | |
| Adage Capital Management, L.P. | 10% | $8,596,850 | 6,012,624 | Adage Capital Management, L.P. | 30 Sep 2025 | |||
| Decheng Capital Management IV (Cayman), LLC | 8.9% | $10,950,070 | 5,733,021 | Xiangmin Cui | 31 Mar 2026 | |||
| Woodline Partners LP | 5.9% | $5,016,841 | 3,508,771 | Woodline Partners LP | 30 Sep 2025 | |||
| Aberdeen Group plc | 5.3% | $6,403,919 | 3,352,837 | Aberdeen Group plc | 01 Apr 2026 |
As of 31 Mar 2026, 49 institutional investors reported holding 40,498,666 shares of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ). This represents 61% of the company’s total 66,704,586 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
60%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 9.7% | 6,494,571 | +11% | 0.01% | $12,956,669 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 8% | 5,329,416 | 0% | 0.02% | $10,658,832 |
| Decheng Capital LLC | 6.7% | 4,447,308 | 0% | 1.3% | $8,894,616 |
| ADAR1 Capital Management, LLC | 5.6% | 3,726,659 | -34% | 0.45% | $7,453,318 |
| Woodline Partners LP | 5.2% | 3,500,901 | 0% | 0.03% | $7,001,802 |
| Aberdeen Group plc | 5% | 3,352,837 | +42% | 0.01% | $6,705,674 |
| RA CAPITAL MANAGEMENT, L.P. | 4.6% | 3,096,336 | 0.07% | $6,192,672 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7% | 1,784,472 | 0% | 0% | $3,568,944 |
| Balyasny Asset Management L.P. | 2.5% | 1,638,770 | -21% | 0.01% | $3,277,540 |
| Eversept Partners, LP | 2.2% | 1,498,993 | 0.2% | $2,997,986 | |
| Affinity Asset Advisors, LLC | 1.8% | 1,226,310 | 0.14% | $2,452,620 | |
| RENAISSANCE TECHNOLOGIES LLC | 0.98% | 656,964 | -10% | 0% | $1,313,928 |
| DIADEMA PARTNERS LP | 0.65% | 433,844 | +25% | 0.39% | $867,688 |
| Hudson Bay Capital Management LP | 0.64% | 428,538 | 0% | 0.01% | $857,076 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.57% | 378,813 | +9.7% | 0% | $757,975 |
| Ikarian Capital, LLC | 0.46% | 303,555 | 0% | 0.09% | $607,110 |
| CANTOR FITZGERALD, L. P. | 0.39% | 262,643 | -53% | 0.02% | $525,286 |
| TWO SIGMA INVESTMENTS, LP | 0.37% | 246,173 | -24% | 0% | $492,346 |
| JANE STREET GROUP, LLC | 0.33% | 221,241 | +119% | 0% | $442,482 |
| VANGUARD FIDUCIARY TRUST CO | 0.28% | 189,530 | 0% | 0% | $379,060 |
| STATE STREET CORP | 0.26% | 174,060 | +12% | 0% | $348,120 |
| CITADEL ADVISORS LLC | 0.24% | 158,733 | 0% | $317,466 | |
| BlackRock, Inc. | 0.19% | 127,852 | +1.4% | 0% | $255,704 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.17% | 115,535 | -38% | 0% | $231,070 |
| Persistent Asset Partners Ltd | 0.17% | 110,117 | +18% | 0.09% | $220,234 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
30
Latest
Q1 2026
Rows shown
1-25 of 30
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 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 |
| 2020 Q2 | 3,584,557 | $10,574,083 | -$1,494,121 | $2.95 | 19 |
| 2020 Q1 | 4,090,779 | $11,087,152 | -$237,339 | $2.71 | 16 |