Vault-13

IGM BIOSCIENCES INC IGMS

COM · Common Stock · CUSIP 449585108

0 institutional holders -1 vs Q3 2025
—reported value*
0 new 0 added 0 reduced 1 sold out net sold ≈ $508 (-400 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.

Trends to Q4 2025

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 93Q4 22: 82Q1 23: 75Q2 23: 80Q3 23: 80Q4 23: 73Q1 24: 88Q2 24: 83Q3 24: 73Q4 24: 86Q1 25: 80Q2 25: 67Q3 25: 1Q4 25: 00Q3 22Q2 23Q1 24Q4 24Q4 25
Numbers
QuarterHolders
Q3 202293
Q4 202282
Q1 202375
Q2 202380
Q3 202380
Q4 202373
Q1 202488
Q2 202483
Q3 202473
Q4 202486
Q1 202580
Q2 202567
Q3 20251
Q4 20250

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q1 24: 48 bought or addedQ1 24: 33 cut or sold outQ2 24: 50 bought or addedQ2 24: 34 cut or sold outQ2 24Q3 24: 32 bought or addedQ3 24: 43 cut or sold outQ4 24: 37 bought or addedQ4 24: 24 cut or sold outQ4 24Q1 25: 40 bought or addedQ1 25: 49 cut or sold outQ2 25: 23 bought or addedQ2 25: 55 cut or sold outQ2 25Q3 25: 0 bought or addedQ3 25: 65 cut or sold outQ4 25: 0 bought or addedQ4 25: 1 cut or sold outQ4 25
Numbers
QuarterBought or addedCut or sold out
Q1 20244833
Q2 20245034
Q3 20243243
Q4 20243724
Q1 20254049
Q2 20252355
Q3 2025065
Q4 202501

Calls vs puts

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

CallsPuts
$0$10k$20k$30k$40kQ1 25 calls: $31.8kQ1 25 puts: $920Q1 25P/C 0.03Q2 25 calls: $2.0kQ2 25 puts: $0Q2 25P/C 0.00Q3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —
Numbers
QuarterCallsPutsP/C
Q1 2025$31.8k$9200.03
Q2 2025$2.0k$00.00
Q3 2025$0$0—
Q4 2025$0$0—

Biggest buyers

None

Biggest sellers

OSAIC HOLDINGS, INC. Sold out -400-400

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, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change