Oncolytics Biotech Inc. (ONCY) Ownership
ONCY ownership summary
as of October 18, 2026- Institutions
- 9.0% of shares outstanding
- Insiders
- 1.66% of shares outstanding
- Shares outstanding
- 131.1M
- Float
- 125.1M shares available to trade
- Short interest
- 5.75% 7.4M shares short
- Days to cover
- 6.69 short interest down 14.7% vs prior month
- Institutions 9.03%
- Insiders 1.66%
- Other investors 89.31%
ONCY top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Marshall Wace Asset Management Ltd | 0.57% | 745K | $372,675 | −114,481 (−13.3%) | June 30, 2026 |
| 2 | Sandbox Financial Partners, LLC | 0.31% | 400K | $200,000 | +400,000 (0.0%) | March 31, 2026 |
| 3 | XTX Topco Ltd | 0.20% | 261K | $130,452 | +151,145 (+137.7%) | June 30, 2026 |
| 4 | SEEDS INVESTOR LLC | 0.20% | 258K | $129,153 | — | June 30, 2026 |
| 5 | International Assets Investment Management, LLC | 0.15% | 201K | $100,630 | +201,260 (0.0%) | June 30, 2026 |
| 6 | Connective Capital Management LLC | 0.14% | 186K | $92,856 | +185,712 (0.0%) | June 30, 2026 |
| 7 | The Goldman Sachs Group Inc | 0.13% | 170K | $84,949 | +169,898 (0.0%) | June 30, 2026 |
| 8 | Tocqueville Asset Management L.P. | 0.11% | 147K | $73,500 | −2,000 (−1.3%) | June 30, 2026 |
| 9 | Everhart Financial Group, Inc. | 0.11% | 141K | $70,450 | +2,738 (+2.0%) | June 30, 2026 |
| 10 | Susquehanna International Group, LLP | 0.10% | 134K | $67,064 | +92,806 (+224.6%) | June 30, 2026 |
| 11 | PFG Investments, LLC | 0.10% | 128K | $64,150 | +75,400 (+142.5%) | June 30, 2026 |
| 12 | HRT FINANCIAL LLC | 0.10% | 126K | $63,162 | +103,069 (+443.2%) | June 30, 2026 |
| 13 | Amvescap Plc. | 0.08% | 101K | $50,598 | +101,195 (0.0%) | June 30, 2026 |
| 14 | Doliver Capital Advisors, Inc. | 0.08% | 100K | $50,000 | — | June 30, 2026 |
| 15 | LPL Financial Corp | 0.06% | 80K | $40,158 | +1,415 (+1.8%) | June 30, 2026 |
| 16 | Franklin Templeton Inc | 0.06% | 80K | $39,921 | +10,000 (+14.3%) | June 30, 2026 |
| 17 | CIBC World Markets Inc. | 0.05% | 69K | $34,652 | +9,000 (+14.9%) | June 30, 2026 |
| 18 | Geode Capital Management, LLC | 0.05% | 67K | $33,470 | — | June 30, 2026 |
| 19 | Renaissance Technologies Corp | 0.05% | 62K | $31,005 | −653,828 (−91.3%) | June 30, 2026 |
| 20 | Royal Bank of Canada | 0.04% | 57K | $28,706 | +57,411 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 1.6M shares and 3 cut 770K.
ONCY top mutual fund and ETF holders
2 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Invesco NASDAQ Future Gen 200 ETF | 0.11% | 142K | $71,121 | — | September 30, 2026 |
| 2 | Victory Extended Market Index | 0.01% | 14K | $6,753 | +13,506 (0.0%) | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ONCY insider transactions
latest 14| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-12 | Jared Kelly | Buy | $0.96 | 5,050 | $4,848 |
| 2026-03-11 | James T Parsons | Buy | $1.03 | 10,000 | $10,300 |
| 2026-02-12 | Allison Hagerman | Buy | $0.83 | 10,000 | $8,300 |
| 2026-02-12 | Bernd R Seizinger | Buy | $0.85 | 40,000 | $34,000 |
| 2026-02-12 | Deborah Margaret Brown | Buy | $0.85 | 25,000 | $21,250 |
| 2026-02-12 | Jared Kelly | Buy | $0.84 | 29,500 | $24,780 |
| 2026-02-12 | Kirk Look | Buy | $0.84 | 12,000 | $10,080 |
| 2026-02-12 | Patricia S Andrews | Buy | $0.86 | 35,400 | $30,444 |
| 2026-02-12 | Thomas Charles Heineman | Buy | $0.83 | 12,132 | $10,070 |
| 2026-02-12 | Wayne Pisano | Buy | $0.84 | 30,000 | $25,200 |
| 2026-02-11 | Andrew Aromando | Buy | $0.86 | 29,600 | $25,456 |
| 2026-02-11 | Bernd R Seizinger | Buy | $0.83 | 60,000 | $49,800 |
| 2026-02-11 | Jared Kelly | Buy | $0.84 | 5,600 | $4,704 |
| 2026-01-16 | Bernd R Seizinger | Buy | $1.04 | 100,000 | $104,000 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ONCY shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ONCY
Institutional investors own 9.0% of Oncolytics Biotech's shares and insiders 1.66%. The largest holder is Marshall Wace Asset Management Ltd with 0.57% of the shares (745K), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 3 reduced their stake in the latest filings. Short interest is 5.75% of the float, or 6.69 days of average trading volume. The share count rose 930.8% since 2014.
Related: ONCY analyst forecast. See the ONCY stock overview for the latest quote and news.
ONCY ownership FAQ
Who owns the most Oncolytics Biotech stock?
The largest shareholders of Oncolytics Biotech are Marshall Wace Asset Management Ltd (0.57%), Sandbox Financial Partners, LLC (0.31%), XTX Topco Ltd (0.20%), SEEDS INVESTOR LLC (0.20%), International Assets Investment Management, LLC (0.15%).
What percentage of Oncolytics Biotech is owned by institutions?
Institutions hold 9.0% of Oncolytics Biotech's shares outstanding; insiders hold 1.66%.
Which funds own Oncolytics Biotech?
The largest fund holders of Oncolytics Biotech are Invesco NASDAQ Future Gen 200 ETF (0.11%), Victory Extended Market Index (0.01%).
What is Oncolytics Biotech's short interest?
7.4M shares of Oncolytics Biotech were sold short, 5.75% of the float; at the average daily volume it would take 6.69 days to cover.
Are insiders buying or selling Oncolytics Biotech?
Of the latest 14 reported insider transactions in Oncolytics Biotech (since January 16, 2026), 14 were purchases and 0 were sales.
How many shares of Oncolytics Biotech are outstanding?
Oncolytics Biotech has 131.1M shares outstanding, of which 125.1M are in the public float.