IGM BIOSCIENCES INC IGMS
COM · Common Stock · CUSIP 449585108
80
institutional holders
-6 vs Q4 2024
17.8m
shares reported held*
$20.5mreported value*
19 new
21 added
25 reduced
24 sold out
net sold ≈ $4.5m (-3.9m shares)
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.3k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $1.15. Options: 3 managers hold calls ($31.8k notional), 3 hold puts ($920).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 93 |
| Q4 2022 | 82 |
| Q1 2023 | 75 |
| Q2 2023 | 80 |
| Q3 2023 | 80 |
| Q4 2023 | 73 |
| Q1 2024 | 88 |
| Q2 2024 | 83 |
| Q3 2024 | 73 |
| Q4 2024 | 86 |
| Q1 2025 | 80 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Bought or addedCut or sold out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 57 | 31 |
| Q3 2023 | 41 | 35 |
| Q4 2023 | 37 | 45 |
| Q1 2024 | 48 | 33 |
| Q2 2024 | 50 | 34 |
| Q3 2024 | 32 | 43 |
| Q4 2024 | 37 | 24 |
| Q1 2025 | 40 | 49 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
CallsPuts
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $271.4k | $113.4k | 0.42 |
| Q3 2024 | $1.2m | $863.4k | 0.72 |
| Q4 2024 | $376.5k | $224.2k | 0.60 |
| Q1 2025 | $31.8k | $920 | 0.03 |
Biggest buyers
| GSA CAPITAL PARTNERS LLP | Added | +331.8k |
| AQR CAPITAL MANAGEMENT LLC | New | +238.9k |
| Verition Fund Management LLC | New | +119.1k |
| TWO SIGMA ADVISERS, LP | New | +90.5k |
| ACADIAN ASSET MANAGEMENT LLC | New | +85.8k |
| Eagle Bay Advisors LLC | Added | +55.0k |
| IEQ CAPITAL, LLC | New | +37.4k |
| Invesco Ltd. | New | +36.1k |
| DEUTSCHE BANK AG\ | Added | +35.5k |
| STATE STREET CORP | Added | +34.2k |
Biggest sellers
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -3.5m |
| FMR LLC | Reduced | -467.9k |
| GOLDMAN SACHS GROUP INC | Reduced | -185.1k |
| TD Asset Management Inc | Sold out | -164.5k |
| Rhenman & Partners Asset Management AB | Sold out | -126.1k |
| WELLINGTON MANAGEMENT GROUP LLP | Sold out | -101.1k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -83.5k |
| Siren, L.L.C. | Reduced | -74.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Sold out | -72.2k |
| MORGAN STANLEY | Reduced | -62.4k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $30.8k26.8k shares |
| SIMPLEX TRADING, LLC | Added | $1.0k1.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Reduced | $920800 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
| SIMPLEX TRADING, LLC | Unchanged | $0100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution +10.3 pts · filed 2025-02-14 | 10.5% |
Fell to 5% or below in the last year: GLAZER CAPITAL, LLC (0.0%, 2025-11-13)
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| BAKER BROS. ADVISORS LP 0.05% of their portfolio | 4.1m $4.7m | Added +953 |
| Siren, L.L.C. 0.21% of their portfolio | 3.3m $3.7m | Reduced -74.6k |
| Redmile Group, LLC 0.32% of their portfolio | 3.0m $3.4m | Unchanged |
| Sanofi 1.00% of their portfolio | 1.4m $1.7m | Unchanged |
| BlackRock, Inc. 0.00% of their portfolio | 1.0m $1.2m | Reduced -23.5k |
| VANGUARD GROUP INC 0.00% of their portfolio | 875.6k $1.0m | Reduced -20.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 793.4k $912.4k | Reduced -185.1k |
| STATE STREET CORP 0.00% of their portfolio | 493.7k $567.8k | Added +34.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 425.7k $489.7k | Added +16.5k |
| GSA CAPITAL PARTNERS LLP 0.04% of their portfolio | 425.3k $489.0k | Added +331.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 238.9k $274.7k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 187.0k $215.0k | Reduced -6.0k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 139.8k $160.7k | Added +32.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 125.6k $144.5k | Reduced -32.2k |
| Verition Fund Management LLC 0.00% of their portfolio | 119.1k $136.9k | New |
| Bruce & Co., Inc. 0.04% of their portfolio | 100.0k $115.0k | Unchanged |
| Eagle Bay Advisors LLC 0.10% of their portfolio | 99.6k $114.6k | Added +55.0k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 90.5k $104.1k | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 85.8k $97.0k | New |
| Woodline Partners LP 0.00% of their portfolio | 69.6k $80.0k | Added +2.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 46.8k $53.8k | Added +35.5k |
| Nuveen, LLC 0.00% of their portfolio | 45.0k $51.8k | First filing |
| Bank of New York Mellon Corp 0.00% of their portfolio | 44.1k $50.7k | Reduced -3.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 42.9k $50.0k | Reduced -3.5m |
| UBS Group AG 0.00% of their portfolio | 41.1k $47.3k | Added +30.6k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 39.2k $45.1k | Unchanged |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 37.4k $43.0k | New |
| Invesco Ltd. 0.00% of their portfolio | 36.1k $41.5k | New |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 35.3k $40.6k | Reduced -40.5k |
| MORGAN STANLEY 0.00% of their portfolio | 34.5k $39.7k | Reduced -62.4k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 32.8k $37.7k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 25.2k $29.0k | Reduced -7.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 21.3k $24.5k | Reduced -1.3k |
| Virtus Investment Advisers, LLC 0.01% of their portfolio | 20.0k $23.0k | New |
| BARCLAYS PLC 0.00% of their portfolio | 19.2k $22.1k | Reduced -7.1k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 18.4k $21.2k | Reduced -228 |
| CWM, LLC 0.00% of their portfolio | 15.6k $18.0k | Added +15.5k |
| Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio | 13.8k $15.9k | New |
| TWO SIGMA SECURITIES, LLC 0.00% of their portfolio | 13.5k $15.5k | New |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 13.3k $15.3k | Added +3.1k |
| Cerity Partners LLC 0.00% of their portfolio | 13.1k $15.1k | Added +2.6k |
| CITIGROUP INC 0.00% of their portfolio | 11.7k $13.5k | Reduced -537 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 11.6k $13.3k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 11.3k $13.0k | Reduced -8.7k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 11.1k $12.7k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 9.9k $11.4k | Added +127 |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 9.9k $11.4k | Reduced -20.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 9.1k $10.5k | Added +390 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 7.6k $8.7k | Added +164 |
| Corebridge Financial, Inc. 0.00% of their portfolio | 7.5k $8.6k | Reduced -111 |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 7.2k $8.3k | Added +3.8k |
| AlphaQuest LLC 0.00% of their portfolio | 7.0k $8.1k | Added +3.7k |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 6.8k $7.9k | Reduced -391 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 6.5k $7.5k | Unchanged |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 6.0k $6.9k | New |
| FMR LLC 0.00% of their portfolio | 5.6k $6.4k | Reduced -467.9k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 3.2k $3.6k | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 3.1k $3.6k | First filing |
| COLDSTREAM CAPITAL MANAGEMENT INC 0.00% of their portfolio | 2.6k $3.0k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 2.3k $2.0k | Reduced -17.7k |
| CoreCap Advisors, LLC 0.00% of their portfolio | 2.2k $2.6k | New |
| Legal & General Group Plc 0.00% of their portfolio | 1.7k $2.0k | Unchanged |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 1.3k $1.5k | Unchanged |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 1.2k $1.3k | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 1.1k $1.3k | Unchanged |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 1.1k $1.3k | Reduced -59 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 854 $982 | Added +831 |
| Point72 (DIFC) Ltd 0.00% of their portfolio | 844 $971 | Added +147 |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 728 $837 | Reduced -3.2k |
| GF FUND MANAGEMENT CO. LTD. 0.00% of their portfolio | 716 $823 | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 400 $460 | Added +304 |
| AMALGAMATED BANK 0.00% of their portfolio | 351 $0 | Unchanged |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 337 $387 | New |
| True Wealth Design, LLC 0.00% of their portfolio | 271 $312 | New |
| Capital Advisors, Ltd. LLC 0.00% of their portfolio | 258 $0 | New |
| Smartleaf Asset Management LLC 0.00% of their portfolio | 41 $50 | Reduced -393 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 22 $25 | Added +1 |
| Sterling Capital Management LLC 0.00% of their portfolio | 18 $21 | Unchanged |
| US BANCORP \DE\ 0.00% of their portfolio | 17 $20 | Reduced -9 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |