Security key
449585108
IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (IGMS)
CUSIP: 449585108
Q1 2023 13F Holders as of 31 Mar 2023
- Security type / class
- Equity / Common Stock, par value $0.01 per share
- Total 13F shares
- 17,755,754
- Total 13F value
- $243,788,540
- Share change
- -170,705
- Put/Call ratio
- 9.2%
- SEC-reported price per share
- $13.74
- Number of holders
- 72
- Value change
- -$3,024,155
- Number of buys
- 34
- Number of sells
- 39
- Shares outstanding
- 34,723,329
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2023
Institutions
72
Top holders
10
Broader feeds
Reporting periods
Holder history for CUSIP 449585108
Recent filing periods:
Ownership snapshot
Top reported holders of IGMS - IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
—
Disclosed value leader
—
Comparable rows
0/0
Latest evidence
—
No top shareholder records were found across 13F, 13D/G, and Forms 3/4/5 for this issuer.
13F holder rows
Institutional holders as of Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
72
Shares
17,755,754
Rows available
72
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2023 vs Q3 2025 Across Filers
Q3 2025 holders
1
Q1 2023 holders
72
Holder diff
71
| Investor | Q3 2025 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q3 2025 value | Q1 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend