Security key
615111101
Onterris, Inc. - Common Stock, par value $0.000004 per share (ONT)
CUSIP: 615111101
Q2 2026 13F Holders as of 30 Jun 2026
- Security type / class
- Equity / Common Stock, par value $0.000004 per share
- Total 13F shares
- 37,686,393
- Total 13F value
- $764,781,394
- Share change
- +4,767,309
- Put/Call ratio
- 65%
- SEC-reported price per share
- $20.21
- Number of holders
- 156
- Value change
- +$93,972,411
- Number of buys
- 87
- Number of sells
- 86
- Shares outstanding
- 34,954,150
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
Q2 2026
Institutions
156
Top holders
10
ONT full security history
Ownership snapshot
Full 13F holder table
Onterris, Inc. SEC filings
Onterris, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ONT - Onterris, Inc. - Common Stock, par value $0.000004 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
BAMCO INC /NY/
Disclosed value leader
BAMCO INC /NY/
Comparable rows
15/15
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.1%
13D/G row: BAMCO INC /NY/
Showing 1-6 of 15 holder rows.
Quick read
BAMCO INC /NY/ leads the comparable SEC ownership view at 6.1%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BAMCO INC /NY/'s linked filing trail.
Comparable ownership
Top 5
BAMCO INC /NY/
6.1%
NOMURA ASSET MANAGEMENT INTERNATI...
6%
GOLDMAN SACHS ASSET MANAGEMENT, L.P.
5%
WILLIAM BLAIR INVESTMENT MANAGEME...
3.7%
ALGER ASSOCIATES INC
3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BAMCO INC /NY/ |
13D/G
13F
Baron Capital Group, Inc. · Company
|
6.1%
|
$59,326,314
2,160,463 shares
|
-$14,697,114 | 30 Sep 2025 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13D/G
13F
Company
|
6%
|
$44,755,294
2,097,249 shares
|
$0 | 30 Jun 2026 |
| GOLDMAN SACHS ASSET MANAGEMENT, L.P. |
13D/G
|
5%
|
$39,977,860
1,826,307 shares
|
$0 | 31 Mar 2026 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
|
3.7%
|
$36,110,394
1,315,018 shares
|
-$27,532,549 | 30 Sep 2025 |
| ALGER ASSOCIATES INC |
13D/G
|
3%
|
$15,502,470
1,013,896 shares
|
$0 | 31 Dec 2024 |
| MANAGED ACCOUNT ADVISORS LLC |
13D/G
|
2.7%
|
$22,645,696
957,130 shares
|
-$19,773,845 | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
156
Shares
37,686,393
Rows available
156
| 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 Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
170
Q2 2026 holders
156
Holder diff
-14
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|