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ONT · Onterris, Inc. · Holdings

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$17.48 -0.63 (-3.48%) At close · Sep 21
Market Cap
$635.98M
Shares
35.12M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 157
Total Value: $768,597,849
Total Shares: 38,030,577
Showing 1–100 of 160 holdings by value · page 1 of 2

Institutional Ownership Trend

24 quarters

Holder Concentration

Across 157 13F filers · Δ vs Mar 31, 2026
Top Holder
8.6%
Sep 2023 → Jun 2026 · range 7.7% – 9.9%
−0.6 pts
Top 5
29.5%
Sep 2023 → Jun 2026 · range 28.6% – 33.6%
−0.8 pts
Top 10
47.6%
Sep 2023 → Jun 2026 · range 44.7% – 52.4%
+0.5 pts
HHI
329
Sep 2023 → Jun 2026 · range 293 – 367
Broadly held+4

Quarterly Activity

vs Mar 31, 2026
New
25
Increased
65
Decreased
50
Sold Out
40
Unchanged
17
Holder count: -15
Institutional value: +2.9%
Shares held: +11.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 160
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1643615 CUSIP 615111101 13F (30d) 4 filings 4 filers Visit website Investor relations