Search
Spero Therapeutics Inc
SPROAdd to Watchlist
1.195USD
+0.015+1.27%
Close 07-28 16:00（ET）Quotes delayed by 15 min
69.18MMarket Cap
4.30P/E TTM
Shareholding Stats
Updated: Thu, May 14
Updated: Thu, May 14
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
GSK plc
15.87%
Pfizer Inc
4.08%
Vanguard Capital Management, LLC
3.11%
Renaissance Technologies LLC
2.21%
Alphabet, Inc.
1.54%
Other
73.19%
Shareholders
Shareholders
Proportion
GSK plc
15.87%
Pfizer Inc
4.08%
Vanguard Capital Management, LLC
3.11%
Renaissance Technologies LLC
2.21%
Alphabet, Inc.
1.54%
Other
73.19%
Shareholder Types
Shareholders
Proportion
Corporation
19.95%
Hedge Fund
6.04%
Investment Advisor
5.98%
Investment Advisor/Hedge Fund
2.68%
Individual Investor
2.57%
Venture Capital
1.56%
Research Firm
0.36%
Pension Fund
0.23%
Other
60.63%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
117
11.81M
20.40%
-1.29M
2025Q4
108
9.31M
16.53%
-3.08M
2025Q3
106
9.05M
16.08%
-5.89M
2025Q2
114
26.06M
46.61%
-2.84M
2025Q1
116
27.38M
49.07%
-1.56M
2024Q4
125
27.51M
50.50%
+2.91M
2024Q3
143
24.19M
44.62%
-8.19M
2024Q2
160
25.74M
47.53%
-7.31M
2024Q1
203
25.36M
47.08%
-8.60M
2023Q4
209
24.88M
47.35%
-1.62M
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
GSK plc
9.19M
16.31%
--
--
Mar 27, 2025
Pfizer Inc
2.36M
4.19%
--
--
Sep 30, 2025
Renaissance Technologies LLC
1.45M
2.58%
+620.60K
+74.58%
Sep 30, 2025
Alphabet, Inc.
889.98K
1.58%
--
--
Sep 30, 2025
Anson Funds Management LP.
1.60M
2.85%
-11.90K
-0.74%
Sep 30, 2025
Two Sigma Investments, LP
589.17K
1.02%
+539.77K
+1092.68%
Dec 31, 2025
Geode Capital Management, L.L.C.
527.48K
0.94%
+16.78K
+3.29%
Sep 30, 2025
BlackRock Institutional Trust Company, N.A.
433.55K
0.77%
--
--
Sep 30, 2025
Citadel Advisors LLC
397.86K
0.69%
+397.86K
--
Dec 31, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Invesco NASDAQ Future Gen 200 ETF
0.63%
Avantis US Small Cap Equity ETF
0%
iShares Micro-Cap ETF
0%
Invesco NASDAQ Future Gen 200 ETF
Proportion0.63%
Avantis US Small Cap Equity ETF
Proportion0%
iShares Micro-Cap ETF
Proportion0%