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Spero Therap
SPRO
1.190
5.56% ( -0.070 )
Closed: Oct 2, 16:00:00 (EDT)
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Overview
Overview
Options
Options
News
News
Posts
Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Public and others
59.70%
Institutions
21.18%
VC/PE firms
15.78%
Individuals & Insiders
3.34%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
GSK Equity Investments, Limited
15.78%
9.19M
0.09%
+0
06/30/2026
Pfizer Venture Investments LLC
4.06%
2.36M
0.02%
+0
06/30/2026
Vanguard Capital Management, LLC
3.99%
2.32M
0.43%
+259.88K
06/30/2026
Esther Rajavelu
CEO, President, CFO, Chief Business Officer, Treasurer & Director
1.69%
986.85K
1.40%
+818.30K
05/04/2026
Renaissance Technologies LLC
1.63%
947.90K
0.43%
-241.33K
06/30/2026
GV Management Company, LLC
1.53%
889.98K
<0.01%
+0
06/30/2026
Susquehanna International Group, LLP
1.33%
776.92K
0.76%
+443.80K
06/30/2026
BlackRock, Inc.
1.02%
594.40K
0.27%
+161.20K
06/30/2026
Geode Capital Management, LLC
0.97%
566.33K
0.07%
+46.41K
06/30/2026
Raymond James Financial, Inc.
0.90%
521.71K
--
+521.71K
06/30/2026
Two Sigma Investments, LP
0.66%
382.81K
0.87%
-502.82K
06/30/2026
Timothy Keutzer
Chief Operating Officer
0.58%
335.13K
0.08%
+46.59K
04/01/2026
Arrowstreet Capital, Limited Partnership
0.57%
332.97K
0.57%
+332.97K
06/30/2026
GSA Capital Partners LLP
0.49%
285.91K
0.01%
+7.60K
06/30/2026
Dimensional Fund Advisors LP
0.47%
274.82K
0.42%
+245.05K
06/30/2026
The Goldman Sachs Group, Inc.
0.44%
256.99K
--
+256.99K
06/30/2026
State Street Investment Management
0.37%
214.75K
<0.01%
+0
06/30/2026
Jane Street Group, LLC
0.27%
158.10K
0.09%
+51.75K
06/30/2026
UBS Asset Management AG
0.24%
139.68K
0.23%
+136.67K
06/30/2026
Bridgeway Capital Management, LLC
0.20%
114.80K
<0.01%
+0
06/30/2026