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Security record · archived quarter

OSUR

name pending profile ingest

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
67Tracked holders
+5Δ holders
30.48MShares held
$135.83MReported value
+8New positions
−3Exits
Rising How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +8.1% · share flow -1.3% · net new positions +7.5%formula
Ownership fragmentation — more holders, smaller aggregate stake

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 67 +5 30.48M $135.83M +8 −3
Q1 2026 64 +5 30.89M $92.54M +7 −2
Q4 2025 59 -1 33.90M $82.04M −1
Q3 2025 15 -1 25.02M $80.33M −1
Q2 2025 13 0 20.32M $60.97M
Q1 2025 10 -1 11.46M $38.61M −1
Q4 2024 11 +2 12.43M $44.86M +2
Q3 2024 8 -3 9.07M $38.71M −3
Q2 2024 11 9.46M $40.30M
Holder count
Who holds it · Q2 2026
#ManagerSharesΔ sharesValueTheir weightHeld
1 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
2 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
3 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
4 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
5 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
6 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
7 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
8 BlackRock (passive) 6.26M -4.0% $27.91M 0.0% ▼ Trim 5 SEC ↗
9 Neuberger Berman Group LLC 4.69M +7.4% $20.92M 0.0% ▲ Add 3 SEC ↗
10 Neuberger Berman Group LLC 4.69M +7.4% $20.92M 0.0% ▲ Add 3 SEC ↗
11 Vanguard Capital Management Llc 3.02M -0.4% $13.46M 0.0% ▼ Trim 2 SEC ↗
12 Dimensional Fund Advisors Lp 2.34M -17.0% $10.44M 0.0% ▼ Trim 3 SEC ↗
13 Dimensional Fund Advisors Lp 2.34M -17.0% $10.44M 0.0% ▼ Trim 3 SEC ↗
14 Dimensional Fund Advisors Lp 2.34M -17.0% $10.44M 0.0% ▼ Trim 3 SEC ↗
15 Dimensional Fund Advisors Lp 2.34M -17.0% $10.44M 0.0% ▼ Trim 3 SEC ↗
16 Renaissance Technologies 2.01M -3.3% $8.99M 0.0% ▼ Trim 9 SEC ↗
17 Geode Capital Management (passive) 1.81M -0.7% $8.07M 0.0% ▼ Trim 9 SEC ↗
18 Geode Capital Management (passive) 1.81M -0.7% $8.07M 0.0% ▼ Trim 9 SEC ↗
19 State Street Global Advisors (passive) 1.69M -1.1% $7.52M 0.0% ▼ Trim 7 SEC ↗
20 Wells Fargo & Company/Mn 924.03K +2.7% $4.12M 0.0% ▲ Add 3 SEC ↗
21 Wells Fargo & Company/Mn 924.03K +2.7% $4.12M 0.0% ▲ Add 3 SEC ↗
22 Wells Fargo & Company/Mn 924.03K +2.7% $4.12M 0.0% ▲ Add 3 SEC ↗
23 D. E. Shaw & Co. 827.19K -40.2% $3.69M 0.0% ▼ Trim 9 SEC ↗
24 D. E. Shaw & Co. 827.19K -40.2% $3.69M 0.0% ▼ Trim 9 SEC ↗
25 JPMorgan Chase 589.18K +63.4% $2.65M 0.0% ▲ Add 4 SEC ↗
26 JPMorgan Chase 589.18K +63.4% $2.65M 0.0% ▲ Add 4 SEC ↗
27 JPMorgan Chase 589.18K +63.4% $2.65M 0.0% ▲ Add 4 SEC ↗
28 JPMorgan Chase 589.18K +63.4% $2.65M 0.0% ▲ Add 4 SEC ↗
29 Northern Trust Corp 587.41K -1.3% $2.62M 0.0% ▼ Trim 3 SEC ↗
30 Northern Trust Corp 587.41K -1.3% $2.62M 0.0% ▼ Trim 3 SEC ↗
31 Northern Trust Corp 587.41K -1.3% $2.62M 0.0% ▼ Trim 3 SEC ↗
32 Northern Trust Corp 587.41K -1.3% $2.62M 0.0% ▼ Trim 3 SEC ↗
33 Charles Schwab Investment… 579.58K -1.1% $2.58M 0.0% ▼ Trim 3 SEC ↗
34 Goldman Sachs Group 561.65K +36.5% $2.50M 0.0% ▲ Add 4 SEC ↗
35 Goldman Sachs Group 561.65K +36.5% $2.50M 0.0% ▲ Add 4 SEC ↗
36 Goldman Sachs Group 561.65K +36.5% $2.50M 0.0% ▲ Add 4 SEC ↗
37 Tudor Investment Corp Et Al 400.83K +255.5% $1.79M 0.0% ▲ Add 3 SEC ↗
38 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
39 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
40 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
41 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
42 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
43 Morgan Stanley 335.64K -10.2% $1.50M 0.0% ▼ Trim 4 SEC ↗
44 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
45 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
46 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
47 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
48 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
49 AQR Capital Management 319.84K -3.3% $1.43M 0.0% ▼ Trim 9 SEC ↗
50 UBS Group AG 259.99K +6.9% $1.16M 0.0% ▲ Add 3 SEC ↗
51 UBS Group AG 259.99K +6.9% $1.16M 0.0% ▲ Add 3 SEC ↗
52 UBS Group AG 259.99K +6.9% $1.16M 0.0% ▲ Add 3 SEC ↗
53 T. Rowe Price 230.17K +17.6% $1.03M 0.0% ▲ Add 9 SEC ↗
54 Bank of New York Mellon Corp 207.62K +3.6% $925,980 0.0% ▲ Add 3 SEC ↗
55 Bank of New York Mellon Corp 207.62K +3.6% $925,980 0.0% ▲ Add 3 SEC ↗
56 Bank of New York Mellon Corp 207.62K +3.6% $925,980 0.0% ▲ Add 3 SEC ↗
57 Bank of New York Mellon Corp 207.62K +3.6% $925,980 0.0% ▲ Add 3 SEC ↗
58 Sei Investments Co 204.51K -51.1% $912,144 0.0% ▼ Trim 3 SEC ↗
59 Sei Investments Co 204.51K -51.1% $912,144 0.0% ▼ Trim 3 SEC ↗
60 Susquehanna International Group, Llp 198.78K +29.4% $886,555 0.0% ▲ Add 3 SEC ↗
61 Susquehanna International Group, Llp 198.78K +29.4% $886,555 0.0% ▲ Add 3 SEC ↗
62 American Century Companies Inc 189.72K -5.1% $846,165 0.0% ▼ Trim 3 SEC ↗
63 Millennium Management 188.32K +893.4% $839,921 0.0% ▲ Add 9 SEC ↗
64 Ameriprise Financial Inc 176.05K -19.3% $785,192 0.0% ▼ Trim 3 SEC ↗
65 Man Group plc 150.85K New $672,809 0.0% New 1 SEC ↗
66 Arrowstreet Capital 146.03K New $651,272 0.0% New 1 SEC ↗
67 Invesco Ltd. 132.97K -19.4% $593,032 0.0% ▼ Trim 3 SEC ↗
68 Invesco Ltd. 132.97K -19.4% $593,032 0.0% ▼ Trim 3 SEC ↗
69 Invesco Ltd. 132.97K -19.4% $593,032 0.0% ▼ Trim 3 SEC ↗
70 Nuveen, LLC 131.33K -17.6% $585,741 0.0% ▼ Trim 3 SEC ↗
71 Nuveen, LLC 131.33K -17.6% $585,741 0.0% ▼ Trim 3 SEC ↗
72 Deutsche Bank Ag\ 118.22K +3.2% $527,284 0.0% ▲ Add 3 SEC ↗
73 Deutsche Bank Ag\ 118.22K +3.2% $527,284 0.0% ▲ Add 3 SEC ↗
74 Hsbc Holdings Plc 119.43K -15.5% $523,701 0.0% ▼ Trim 3 SEC ↗
75 Barclays Plc 106.94K -7.2% $476,948 0.0% ▼ Trim 3 SEC ↗
76 Barclays Plc 106.94K -7.2% $476,948 0.0% ▼ Trim 3 SEC ↗
77 Citadel Advisors 101.96K +84.3% $454,733 0.0% ▲ Add 9 SEC ↗
78 Rhumbline Advisers 88.26K +3.9% $393,648 0.0% ▲ Add 3 SEC ↗
79 Alliancebernstein L.P. 108.82K -12.8% $326,448 0.0% ▼ Trim 3 SEC ↗
80 Russell Investments Group, Ltd. 71.75K -14.3% $320,021 0.0% ▼ Trim 3 SEC ↗
81 Russell Investments Group, Ltd. 71.75K -14.3% $320,021 0.0% ▼ Trim 3 SEC ↗
82 Russell Investments Group, Ltd. 71.75K -14.3% $320,021 0.0% ▼ Trim 3 SEC ↗
83 Russell Investments Group, Ltd. 71.75K -14.3% $320,021 0.0% ▼ Trim 3 SEC ↗
84 Russell Investments Group, Ltd. 71.75K -14.3% $320,021 0.0% ▼ Trim 3 SEC ↗
85 Two Sigma Investments 59.30K +5.7% $264,478 0.0% ▲ Add 2 SEC ↗
86 Bank Of America Corp /De/ 57.38K -57.3% $255,901 0.0% ▼ Trim 3 SEC ↗
87 Bank Of America Corp /De/ 57.38K -57.3% $255,901 0.0% ▼ Trim 3 SEC ↗
88 State Of Wisconsin Investment Board 47.70K New $212,729 0.0% New 1 SEC ↗
89 IMC-Chicago, LLC 46.65K +98.4% $208,059 0.0% ▲ Add 2 SEC ↗
90 State Board Of Administration Of… 34.34K 0.0% $153,147 0.0% Held 3 SEC ↗
91 Citigroup Inc 30.24K +109.5% $134,889 0.0% ▲ Add 3 SEC ↗
92 Citigroup Inc 30.24K +109.5% $134,889 0.0% ▲ Add 3 SEC ↗
93 MIRAE ASSET GLOBAL ETFS HOLDINGS… 30.19K -10.4% $134,665 0.0% ▼ Trim 3 SEC ↗
94 HighTower Advisors, LLC 29.52K -53.3% $131,664 0.0% ▼ Trim 3 SEC ↗
95 Marshall Wace 24.20K New $107,932 0.0% New 1 SEC ↗
96 Group One Trading Llc 21.51K New $95,939 0.0% New 1 SEC ↗
97 Quantinno Capital Management LP 20.61K New $91,934 0.0% New 1 SEC ↗
98 Manufacturers Life Insurance… 20.55K -2.7% $91,657 0.0% ▼ Trim 3 SEC ↗
99 New York State Common Retirement… 19.31K 0.0% $86,109 0.0% Held 3 SEC ↗
100 LPL Financial LLC 18.63K -6.7% $83,081 0.0% ▼ Trim 3 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Man Group plc $672,809 0.0%
Arrowstreet Capital $651,272 0.0%
State Of Wisconsin Investment… $212,729 0.0%
Marshall Wace $107,932 0.0%
Group One Trading Llc $95,939 0.0%
Quantinno Capital Management… $91,934 0.0%

Exited

Squarepoint Ops LLC $45,597 was 0.0%
ProShare Advisors LLC $30,270 was 0.0%
TD Waterhouse Canada Inc. $608 was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 140 holders, 56.36M shares, $150.50M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q2 2026 · Methodology · Get this via the API