Vault-13

IGM BIOSCIENCES INC IGMS

COM · Common Stock · CUSIP 449585108

88 institutional holders +15 vs Q4 2023
23,034,07323.0m shares reported held*
$222.3mreported value*
26 new 22 added 22 reduced 11 sold out net bought ≈ $9.8m (+1.0m 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. Holder counts are more reliable. Implied quarter-end price ≈ $9.65. Options: 3 managers hold calls ($107.1k notional), 2 hold puts ($49.2k).

Trends to Q1 2024

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 93Q4 22: 82Q1 23: 75Q2 23: 80Q3 23: 80Q4 23: 73Q1 24: 8888Q3 22Q1 23Q3 23Q1 24
Numbers
QuarterHolders
Q3 202293
Q4 202282
Q1 202375
Q2 202380
Q3 202380
Q4 202373
Q1 202488

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q4 22: 40 bought or addedQ4 22: 39 cut or sold outQ4 22Q1 23: 35 bought or addedQ1 23: 40 cut or sold outQ1 23Q2 23: 57 bought or addedQ2 23: 31 cut or sold outQ2 23Q3 23: 41 bought or addedQ3 23: 35 cut or sold outQ3 23Q4 23: 37 bought or addedQ4 23: 45 cut or sold outQ4 23Q1 24: 48 bought or addedQ1 24: 33 cut or sold outQ1 24
Numbers
QuarterBought or addedCut or sold out
Q4 20224039
Q1 20233540
Q2 20235731
Q3 20234135
Q4 20233745
Q1 20244833

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$100k$200k$300kQ2 23 calls: $226.4kQ2 23 puts: $166.1kQ2 23P/C 0.73Q3 23 calls: $144.6kQ3 23 puts: $9.2kQ3 23P/C 0.06Q4 23 calls: $221.9kQ4 23 puts: $31.7kQ4 23P/C 0.14Q1 24 calls: $107.1kQ1 24 puts: $49.2kQ1 24P/C 0.46
Numbers
QuarterCallsPutsP/C
Q2 2023$226.4k$166.1k0.73
Q3 2023$144.6k$9.2k0.06
Q4 2023$221.9k$31.7k0.14
Q1 2024$107.1k$49.2k0.46

Biggest buyers

PRICE T ROWE ASSOCIATES INC /MD/ Added +628,001+628.0k
MILLENNIUM MANAGEMENT LLC Added +447,865+447.9k
BAKER BROS. ADVISORS LP Added +397,311+397.3k
GOLDMAN SACHS GROUP INC Added +238,110+238.1k
MORGAN STANLEY Added +113,203+113.2k
Redmile Group, LLC Added +100,936+100.9k
JACOBS LEVY EQUITY MANAGEMENT, INC New +78,580+78.6k
TD Asset Management Inc Added +75,670+75.7k
MARSHALL WACE, LLP New +70,776+70.8k
WELLINGTON MANAGEMENT GROUP LLP New +57,190+57.2k

Biggest sellers

ADAGE CAPITAL PARTNERS GP, L.L.C. Sold out -400,000-400.0k
FMR LLC Reduced -381,165-381.2k
CITADEL ADVISORS LLC Reduced -198,345-198.3k
Exome Asset Management LLC Sold out -135,596-135.6k
Hudson Bay Capital Management LP Sold out -124,260-124.3k
PRUDENTIAL FINANCIAL INC Sold out -65,870-65.9k
VANGUARD GROUP INC Reduced -43,491-43.5k
STATE OF WISCONSIN INVESTMENT BOARD Sold out -29,600-29.6k
PRELUDE CAPITAL MANAGEMENT, LLC Sold out -29,421-29.4k
Artal Group S.A. Reduced -20,000-20.0k

Biggest calls

CITADEL ADVISORS LLC Reduced $96.5k10.0k shares
Walleye Capital LLC New $10.6k1.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $49.2k5.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 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.

HolderStakeChangeShares Last filed
PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution +10.3 pts · filed 2025-02-14 10.5% +10.3 pts 3.6m 2025-02-14

Fell to 5% or below in the last year: GLAZER CAPITAL, LLC (0.0%, 2025-11-13)

Holders, Q1 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BAKER BROS. ADVISORS LP 0.49% of their portfolio NEW YORK, NY 4,088,3224.1m $39.5m $39.5m 0.49% Added +397.3k +397,311
2 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 3,888,0233.9m $37.5m $37.5m 0.00% Added +628.0k +628,001
3 Artal Group S.A. 0.77% of their portfolio LUXEMBOURG, N4 3,080,4223.1m $29.7m $29.7m 0.77% Reduced -20.0k -20,000
4 Redmile Group, LLC 1.09% of their portfolio LARKSPUR, CA 3,072,4783.1m $29.6m $29.6m 1.09% Added +100.9k +100,936
5 FMR LLC 0.00% of their portfolio BOSTON, MA 1,317,3411.3m $12.7m $12.7m 0.00% Reduced -381.2k -381,165
6 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 1,278,6191.3m $12.3m $12.3m 0.00% Added +238.1k +238,110
7 RA CAPITAL MANAGEMENT, L.P. 0.12% of their portfolio BOSTON, MA 937,500937.5k $9.0m $9.0m 0.12% Unchanged
8 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 853,658853.7k $8.2m $8.2m 0.00% Reduced -43.5k -43,491
9 BlackRock Inc. 0.00% of their portfolio New York, NY 757,963758.0k $7.3m $7.3m 0.00% Reduced -4.5k -4,507
10 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 695,061695.1k $6.7m $6.7m 0.01% Added +447.9k +447,865
11 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 336,005336.0k $3.2m $3.2m 0.00% Added +9.3k +9,349
12 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 319,269319.3k $3.1m $3.1m 0.00% Added +11.8k +11,801
13 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 303,285303.3k $2.9m $2.9m 0.00% Added +113.2k +113,203
14 Rhenman & Partners Asset Management AB 0.18% of their portfolio Stockholm, V7 195,000195.0k $1.9m $1.9m 0.18% Reduced -5.0k -5,000
15 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 159,122159.1k $1.5m $1.5m 0.00% Added +75.7k +75,670
16 SAMSARA BIOCAPITAL, LLC 0.23% of their portfolio PALO ALTO, CA 154,664154.7k $1.5m $1.5m 0.23% Unchanged
17 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 137,236137.2k $1.3m $1.3m 0.00% Added +440 +440
18 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 121,118121.1k $1.2m $1.2m 0.00% Added +301 +301
19 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 93,16393.2k $899.0k $899.0k 0.00% Added +45.9k +45,918
20 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 78,58078.6k $758.3k $758.3k 0.00% New
21 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 75,00075.0k $723.8k $723.8k 0.01% Unchanged
22 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 70,77670.8k $683.0k $683.0k 0.00% New
23 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 70,50170.5k $680.3k $680.3k 0.00% Added +21.6k +21,559
24 Bruce & Co., Inc. 0.21% of their portfolio CHICAGO, IL 65,00065.0k $627.2k $627.2k 0.21% Unchanged
25 Pennant Investors, LP 0.17% of their portfolio Summit, NJ 64,90064.9k $626.3k $626.3k 0.17% Unchanged
26 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 57,19057.2k $551.9k $551.9k 0.00% New
27 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 49,55349.6k $478.2k $478.2k 0.00% Reduced -2.4k -2,444
28 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 48,10048.1k $464.0k $464.0k 0.00% Added +11.5k +11,500
29 Eagle Bay Advisors LLC 0.27% of their portfolio NEW YORK, NY 44,63544.6k $430.7k $430.7k 0.27% Unchanged
30 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 40,74940.7k $393.2k $393.2k 0.00% Reduced -9.1k -9,074
31 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 39,45339.5k $380.7k $380.7k 0.00% Unchanged
32 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 32,30032.3k $311.7k $311.7k 0.00% Unchanged
33 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 31,12031.1k $300.3k $300.3k 0.00% Reduced -4.5k -4,515
34 Susquehanna Portfolio Strategies, LLC 0.01% of their portfolio Bala Cynwyd, PA 30,20930.2k $291.5k $291.5k 0.01% Unchanged
35 EXCHANGE TRADED CONCEPTS, LLC 0.01% of their portfolio Oklahoma City, OK 27,93527.9k $269.6k $269.6k 0.01% Added +8.9k +8,887
36 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio BALA CYNWYD, PA 27,73127.7k $267.6k $267.6k 0.01% New
37 Trexquant Investment LP 0.00% of their portfolio STAMFORD, CT 24,17724.2k $233.3k $233.3k 0.00% New
38 PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio BOSTON, MA 23,31923.3k $225.0k $225.0k 0.00% Reduced -7.0k -6,954
39 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 22,27222.3k $214.9k $214.9k 0.00% Reduced -2.5k -2,460
40 ExodusPoint Capital Management, LP 0.00% of their portfolio NEW YORK, NY 20,32320.3k $196.0k $196.0k 0.00% New
41 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 20,09120.1k $193.9k $193.9k 0.00% Added +887 +887
42 Walleye Capital LLC 0.00% of their portfolio NEW YORK, NY 20,05020.1k $193.5k $193.5k 0.00% New
43 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 19,05419.1k $183.9k $183.9k 0.00% Reduced -5.5k -5,516
44 GSA CAPITAL PARTNERS LLP 0.01% of their portfolio LONDON, X0 18,39818.4k $178.0k $178.0k 0.01% New
45 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 17,33517.3k $167.3k $167.3k 0.00% New
46 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 17,10717.1k $165.1k $165.1k 0.00% New
47 EntryPoint Capital, LLC 0.14% of their portfolio NEW YORK, NY 15,80115.8k $152.5k $152.5k 0.14% New
48 VIRTUS ADVISERS, LLC 0.07% of their portfolio HARTFORD, CT 13,33213.3k $128.7k $128.7k 0.07% Reduced -911 -911
49 UBS Group AG 0.00% of their portfolio ZURICH, V8 13,33113.3k $128.6k $128.6k 0.00% Added +131 +131
50 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 13,16313.2k $127.0k $127.0k 0.00% Reduced -198.3k -198,345
51 XTX Topco Ltd 0.02% of their portfolio LONDON, X0 11,94111.9k $115.2k $115.2k 0.02% New
52 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 11,67211.7k $112.6k $112.6k 0.00% Reduced -7.8k -7,816
53 Pale Fire Capital SE 0.02% of their portfolio Prague, 2N 11,60111.6k $112.0k $112.0k 0.02% Unchanged
54 Brevan Howard Capital Management LP 0.01% of their portfolio ST. HELIER, Y9 10,58910.6k $102.2k $102.2k 0.01% Reduced -1.3k -1,288
55 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 10,51310.5k $101.5k $101.5k 0.00% New
56 INDEPENDENT FINANCIAL GROUP, LLC 0.00% of their portfolio SAN DIEGO, CA 10,50010.5k $101.3k $101.3k 0.00% New
57 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 10,20010.2k $98.4k $98.4k 0.00% New
58 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 7,2487.2k $69.9k $69.9k 0.00% New
59 AlphaQuest LLC 0.01% of their portfolio New York, NY 6,9527.0k $67.1k $67.1k 0.01% New
60 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 6,5496.5k $63.2k $63.2k 0.00% Reduced -55 -55
61 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 6,4946.5k $62.7k $62.7k 0.00% Unchanged
62 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 5,5475.5k $53.5k $53.5k 0.00% Reduced -6.2k -6,155
63 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 4,8394.8k $46.7k $46.7k 0.00% Added +604 +604
64 ADAR1 Capital Management, LLC 0.01% of their portfolio AUSTIN, TX 4,0004.0k $38.6k $38.6k 0.01% New
65 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 3,9123.9k $37.8k $37.8k 0.00% Added +12 +12
66 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 2,5242.5k $24.4k $24.4k 0.00% Added +637 +637
67 nVerses Capital, LLC 0.04% of their portfolio WELLINGTON, FL 1,6001.6k $15.4k $15.4k 0.04% New
68 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 1,3361.3k $12.9k $12.9k 0.00% Reduced -851 -851
69 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,3271.3k $12.8k $12.8k 0.00% Added +700 +700
70 Legal & General Group Plc 0.00% of their portfolio London, X0 1,0231.0k $9.8k $9.8k 0.00% Reduced -565 -565
71 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 800800 $7.7k $7.7k 0.00% New
72 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 749749 $7.2k $7.2k 0.00% New
73 COMERICA BANK 0.00% of their portfolio DALLAS, TX 617617 $6.0k $6.0k 0.00% Unchanged
74 HANSEATIC MANAGEMENT SERVICES INC 0.01% of their portfolio ALBUQUERQUE, NM 366366 $3.5k $3.5k 0.01% New
75 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 351351 $3.0k $3.0k 0.00% Reduced -638 -638
76 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 302302 $3.0k $3.0k 0.00% Reduced -5.4k -5,411
77 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 258258 $2.5k $2.5k 0.00% Reduced -1.3k -1,284
78 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 187187 $1.8k $1.8k 0.00% Added +157 +157
79 LANARK FINANCIAL, INC. 0.00% of their portfolio BIRMINGHAM, AL 150150 $1.0k $1.0k 0.00% Unchanged
80 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 7676 $733 $733 0.00% New
81 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 7575 $724 $724 0.00% Unchanged
82 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 1717 $164 $164 0.00% Unchanged
83 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 99 $85 $85 0.00% Unchanged
84 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 77 $68 $68 0.00% Unchanged
85 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 44 $39 $39 0.00% New
86 Avior Wealth Management, LLC 0.00% of their portfolio OMAHA, NE 33 $28 $28 0.00% New
87 CWM, LLC 0.00% of their portfolio OMAHA, NE 11 $0 $0 0.00% New
88 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged