CERUS CORP (CERS) Institutional Ownership Changes & 13F Activity
CERUS CORP (CERS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q3 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include ARK Invest, Baker Bros. Advisors Lp, D. E. Shaw & Co., Inc., State Street Corp, and Senvest Management, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| State Street Corp | Sell | -4,753,962 | -100.0% | 0 | $0.00 | Q3 2026 | Sep 22, 2026 |
| Manufacturers Life Insurance Company, The | Sell | -54,821 | -100.0% | 0 | $0.00 | Q3 2026 | Sep 09, 2026 |
| Parkside Financial Bank & Trust | Sell | -355 | -100.0% | 0 | $0.00 | Q3 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Sell | -736,682 | -100.0% | 0 | $0.00 | Q3 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Sell | -15,064 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Sell | -2,587 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Sell | -315,050 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 21, 2026 |
| Mercer Global Advisors Inc | Sell | -60,392 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 19, 2026 |
| ARK Invest | Sell | -17,932,099 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Baker Bros. Advisors Lp | Sell | -6,395,431 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -5,485,983 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Senvest Management, Llc | Sell | -4,614,061 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Silvercrest Asset Management Group Llc | Sell | -4,077,187 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -3,484,633 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -2,317,802 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Sell | -1,878,275 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Sell | -1,733,553 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Sell | -1,159,506 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Topline Capital Management, Llc | Sell | -1,051,676 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Alliancebernstein L.P. | Sell | -1,029,160 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -868,457 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Primecap Management Co/Ca/ | Sell | -781,800 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Driehaus Capital Management Llc | Sell | -424,610 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Atom Investors Lp | Sell | -338,018 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Invesco Ltd. | Sell | -318,592 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Sell | -279,407 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Sei Investments Co | Sell | -274,632 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Voleon Capital Management Lp | Sell | -270,302 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Boothbay Fund Management, Llc | Sell | -247,742 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
| Susquehanna Portfolio Strategies, Llc | Sell | -244,696 | -100.0% | 0 | $0.00 | Q3 2026 | Aug 14, 2026 |
Frequently asked questions about CERS activity
Which institutional owners are buying CERS?
Institutional owners buying CERS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CERS activity?
"Buy" means an investor increased their reported position in CERS compared to the prior reporting period. This reflects growing exposure to CERUS CORP (CERS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CERS increasing?
Institutional interest in CERS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related CERS Institutional Insights
- CERS Overview
- CERS 13F Institutional Holders
- CERS Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- CERS Insider Trading & SEC Form 4 Activity
- CERS Articles
- Top Institutional Investor Stock Rankings