Latest Period
Q4 2025
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
36
Shares (Excl. Options)
35,287,993
Price
$1.55
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- Type / Class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- EQ on Nasdaq
- Shares outstanding
- 65,456,657
- Price per share
- $1.91
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 35,287,993
- Total reported value
- $54,667,551
- % of total 13F portfolios
- 0%
- Share change
- +7,459,175
- Value change
- +$11,793,365
- Number of holders
- 36
- Price from insider filings
- $1.91
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- EQ - Equillium, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 29446K106.
- 36 institutions reported positions in Q4 2025.
- 5 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 36 to 3 between Q4 2025 and Q1 2026.
- Reported value moved from $54,667,551 to $6,733,682.
Why This Matters
- 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.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 36 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 29446K106?
CUSIP 29446K106 identifies EQ - Equillium, Inc. - Common Stock, par value $0.0001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 29446K106:
Significant Owners of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 9.9% | $11,275,564 | 6,480,209 | RA Capital Management, L.P. | 13 Mar 2026 | |||
| ADAR1 Capital Management, LLC | 9.9% | $8,857,442 | 6,194,882 | ADAR1 Capital Management GP, LLC | 30 Sep 2025 | |||
| 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 | |||
| Woodline Partners LP | 5.9% | $5,016,841 | 3,508,771 | Woodline Partners LP | 30 Sep 2025 |
As of 31 Dec 2025, 36 institutional investors reported holding 35,287,993 shares of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ). This represents 54% of the company’s total 65,456,657 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ) together control 54% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 9% | 5,862,212 | 0% | $9,057,118 | |
| ADAR1 Capital Management, LLC | 8.6% | 5,608,078 | +0.86% | 0.65% | $8,692,521 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 8.1% | 5,329,416 | 0% | 0.01% | $8,260,595 |
| Decheng Capital LLC | 6.8% | 4,447,308 | 0% | 0.93% | $6,893,328 |
| Woodline Partners LP | 5.3% | 3,500,901 | -0.22% | 0.02% | $5,426,397 |
| Aberdeen Group plc | 3.6% | 2,366,688 | +524% | 0.01% | $3,668,366 |
| Balyasny Asset Management L.P. | 3.2% | 2,076,250 | +3.6% | 0.01% | $3,218,188 |
| VANGUARD GROUP INC | 2.9% | 1,920,423 | +46% | 0% | $2,976,656 |
| RENAISSANCE TECHNOLOGIES LLC | 1.1% | 733,226 | +19% | 0% | $1,136,500 |
| CANTOR FITZGERALD, L. P. | 0.86% | 562,643 | +32% | 0.03% | $872,097 |
| Hudson Bay Capital Management LP | 0.65% | 428,538 | +54% | 0% | $664,234 |
| DIADEMA PARTNERS LP | 0.53% | 347,393 | +16% | 0.32% | $538,459 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.53% | 345,310 | +11% | 0% | $535,289 |
| TWO SIGMA INVESTMENTS, LP | 0.5% | 324,610 | +144% | 0% | $503,146 |
| Ikarian Capital, LLC | 0.46% | 303,555 | -8.6% | 0.06% | $470,510 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.28% | 185,669 | 0% | $287,787 | |
| STATE STREET CORP | 0.24% | 155,420 | +13% | 0% | $240,901 |
| BlackRock, Inc. | 0.19% | 126,053 | 0% | 0% | $195,382 |
| JANE STREET GROUP, LLC | 0.15% | 100,850 | 0% | $156,317 | |
| BOOTHBAY FUND MANAGEMENT, LLC | 0.14% | 93,211 | -24% | 0% | $144,477 |
| Persistent Asset Partners Ltd | 0.14% | 93,123 | +35% | 0.07% | $144,341 |
| NORTHERN TRUST CORP | 0.14% | 88,529 | +153% | 0% | $137,220 |
| ROYAL BANK OF CANADA | 0.12% | 79,734 | 0% | $124,000 | |
| AlphaCore Capital LLC | 0.08% | 52,345 | 0% | 0% | $81,135 |
| TWO SIGMA ADVISERS, LP | 0.07% | 44,100 | 0% | $68,355 |
Institutional Holders of Equillium, Inc. - Common Stock, par value $0.0001 per share (EQ) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 3,366,841 | $6,733,682 | +$1,971,990 | $2.00 | 3 |
| 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 |
| 2019 Q4 | 4,173,854 | $14,111,189 | -$864,475 | $3.38 | 19 |
| 2019 Q3 | 4,297,052 | $16,328,592 | -$837,267 | $3.80 | 17 |
| 2019 Q2 | 4,329,735 | $24,505,860 | -$1,886,020 | $5.66 | 22 |
| 2019 Q1 | 4,547,834 | $36,383,000 | -$9,630 | $8.00 | 30 |
| 2018 Q4 | 4,547,241 | $37,105,000 | +$36,296,000 | $8.16 | 30 |