Parabilis Medicines, Inc.: which funds bought and sold

Institutions that bought and sold Parabilis Medicines shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 76 institutions that filed 13F reports for both quarters added to or opened positions in Parabilis Medicines, and 0 cut or closed them. Together they added a net 94.3M shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 53.0M shares; index fund managers were net buyers of 2.6M shares. 76 opened a new position and 0 sold out entirely.

Bought, Q2 2026 76 institutions, 76 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out

Net change, all compared +94.3M shares (—)

Net change, active managers +53.0M shares (—), 28 bought, 0 sold

Buyers versus sellers

institutions compared, 76

76 bought 0 sold

Active managers and hedge funds 28 bought · 0 sold · +53.0M

Index fund managers 5 bought · 0 sold · +2.6M

Other institutions 43 bought · 0 sold · +38.7M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
RA Capital Management, L.P. Hedge fund	+28.9M New position	28.9M	$792M
FMR LLC Active manager	+10.3M New position	10.3M	$282M
Arch Venture Management, LLC	+6.4M New position	6.4M	$176M
Venbio Partners LLC	+5.3M New position	5.3M	$144M
Alphabet Inc.	+4.9M New position	4.9M	$135M
Nextech Invest Ltd.	+4.7M New position	4.7M	$128M
Cormorant Asset Management, LP Hedge fund	+4.6M New position	4.6M	$126M
Regeneron Pharmaceuticals, Inc.	+4.2M New position	4.2M	$114M
Siren, L.L.C.	+3.0M New position	3.0M	$81.9M
Frazier Life Sciences Management, L.P.	+1.9M New position	1.9M	$52.6M
Deerfield Management Company, L.P. Hedge fund	+1.9M New position	1.9M	$51.5M
General Catalyst Group Management, LLC	+1.6M New position	1.6M	$43.8M
General Atlantic, L.P.	+1.5M New position	1.5M	$42.1M
Soleus Capital Management, L.P. Hedge fund	+1.5M New position	1.5M	$40.1M
Vanguard Portfolio Management LLC Index funds	+1.3M New position	1.3M	$35.6M
Vanguard Capital Management LLC Index funds	+1.2M New position	1.2M	$31.7M
Jpmorgan Chase & Co	+1.0M New position	1.0M	$30.4M
Foresite Capital Management Vi LLC	+999K New position	999K	$27.3M
Catalio Capital Management, LP	+824K New position	824K	$22.6M
Alliancebernstein L.P. Active manager	+810K New position	810K	$22.2M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
RA Capital Management, L.P. Hedge fund	+28.9M New position	28.9M	$792M
FMR LLC Active manager	+10.3M New position	10.3M	$282M
Cormorant Asset Management, LP Hedge fund	+4.6M New position	4.6M	$126M
Deerfield Management Company, L.P. Hedge fund	+1.9M New position	1.9M	$51.5M
Soleus Capital Management, L.P. Hedge fund	+1.5M New position	1.5M	$40.1M
Alliancebernstein L.P. Active manager	+810K New position	810K	$22.2M
Price T Rowe Associates Inc Active manager	+752K New position	752K	$20.6M
Casdin Capital, LLC Hedge fund	+646K New position	646K	$17.7M
Rock Springs Capital Management LP Hedge fund	+578K New position	578K	$15.8M
Logos Global Management LP Hedge fund	+525K New position	525K	$14.4M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
No institution cut its holding.

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
None of the active managers on our list.

New positions

largest by value

Institution	Shares	Value June 30, 2026
RA Capital Management, L.P.Hedge fund	28.9M	$792M
FMR LLCActive manager	10.3M	$282M
Arch Venture Management, LLC	6.4M	$176M
Venbio Partners LLC	5.3M	$144M
Alphabet Inc.	4.9M	$135M
Nextech Invest Ltd.	4.7M	$128M
Cormorant Asset Management, LPHedge fund	4.6M	$126M
Regeneron Pharmaceuticals, Inc.	4.2M	$114M
Siren, L.L.C.	3.0M	$81.9M
Frazier Life Sciences Management, L.P.	1.9M	$52.6M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
No institution sold its whole holding.

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 78
Ten largest holders: 75.4%
Index fund managers: 2.6%
Active managers and hedge funds: 55.9%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	New	Net change in shares	Net %
Active managers and hedge funds	28	28	+53.0M	—
Index fund managers	5	5	+2.6M	—
Other institutions	43	43	+38.7M	—

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Parabilis Medicines.

Only managers that filed a holdings report for both quarters are compared (76 here). 2 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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