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ABUS · Arbutus Biopharma Corp

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$4.77 -0.21 (-4.22%) At close · Aug 20
Market Cap
$943.73M
Shares
197.85M

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: 176
Total Value: $675,545,933
Total Shares: 140,749,039

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 176 13F filers · Δ vs Mar 31, 2026
Top Holder
13.6%
Sep 2023 → Jun 2026 · range 13.6% – 21.4%
−4.9 pts
Top 5
52.7%
Sep 2023 → Jun 2026 · range 51.7% – 63.1%
−3.7 pts
Top 10
71.5%
Sep 2023 → Jun 2026 · range 71.5% – 80.0%
−2.3 pts
HHI
697
Sep 2023 → Jun 2026 · range 697 – 970
Broadly held−132

Quarterly Activity

vs Mar 31, 2026
New
34
Increased
62
Decreased
41
Sold Out
28
Unchanged
39
Holder count: +6
Institutional value: +7.3%
Shares held: +0.6%

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 179
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1447028 CUSIP 03879J100 13F (30d) 174 filings 170 filers Visit website