SPERO THERAPEUTICS INC (SPRO) Institutional Ownership and Insiders Activity
SPERO THERAPEUTICS INC (SPRO) is widely held by institutional investors, with 58 firms reporting positions valued at approximately $49.46M based on SEC Form 13F filings for the quarter ended June 30, 2026.
Gsk Plc is the largest disclosed holder, reporting approximately $20.31M in SPRO holdings in its latest filing.
Institutional Holders
58
Total Reported Value
$49.46M
Largest Holder
Gsk Plc
Largest Position
$20.31M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
8
Funds Exiting Positions
13
Top Institutional Owners
View allInvestorReported Balance
- Gsk Plc$20.31M
- Pfizer Inc$5.34M
- Vanguard Capital Management Llc$4.50M
- Renaissance Technologies LLC$2.09M
- Alphabet Inc.$1.97M
SPRO News
All news- Pfizer Inc Portfolio Analysis: Q2 2026 Investment Activity
Aug 17, 2026 · valut.ai
Related SPRO Institutional Insights:
- SPRO 13F Institutional Holders
- SPRO Superinvestors
- SPRO Institutional Ownership Changes
- 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
- SPRO Insider Trading & SEC Form 4 Activity
- SPRO Articles
- Top Institutional Investor Stock Rankings