13FBOX
SPERO THERAPEUTICS INC · 13F Institutional Holdings
Options Calculator Rankings
S

SPERO THERAPEUTICS INC

SPRO
Institutions
61
Combined AUM (Q2 2026)
$48.0M
Combined Shares (Q2 2026)
21.6M
Overall Trend
Increase
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+3.0M
37 · 21 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-2.2M
19 · 11 Exit · ≈
⚖️ Net
+767,103
Net Buy
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$48.0M
Institutions
61
New Buys
21
Adds
16
Reduces
8
Exits
11
Unchanged
16
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
GSK plc
3.37%3.59%#1$20.3M9.2M$21.5M9.2M00.00%Unchanged
PFIZER INC
3.13%2.31%#2$5.3M2.4M$5.5M2.4M00.00%Unchanged
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%<0.01%#29$4.5M2.0M$4.2M1.8M+236,346+13.13%Add
RENAISSANCE TECHNOLOGIES LLC
<0.01%<0.01%#12$2.1M947,904$2.8M1.2M-241,331-20.29%Reduce
Alphabet Inc.
0.05%0.05%#4$2.1M889,979$2.1M889,97900.00%Unchanged
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%<0.01%#27$1.8M807,590$892,979381,615+425,975+111.62%Add
BlackRock, Inc.
<0.01%<0.01%#44$1.3M594,404$1.0M433,202+161,202+37.21%Add
GEODE CAPITAL MANAGEMENT, LLC
<0.01%<0.01%#32$1.3M566,329$1.2M519,922+46,407+8.93%Add
RAYMOND JAMES FINANCIAL INC
<0.01%#24$1.2M521,705$00+521,705New Buy
TWO SIGMA INVESTMENTS, LP
<0.01%<0.01%#21$846,019382,814$2.1M885,631-502,817-56.77%Reduce
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
<0.01%#23$735,864332,970$00+332,970New Buy
VANGUARD FIDUCIARY TRUST CO
<0.01%<0.01%#26$635,702287,648$618,029264,115+23,533+8.91%Add
GSA CAPITAL PARTNERS LLP
0.04%0.04%#5$631,852285,906$651,000278,304+7,602+2.73%Add
DIMENSIONAL FUND ADVISORS LP
<0.01%<0.01%#28$607,616274,820$69,20729,768+245,052+823.21%Add
GOLDMAN SACHS GROUP INC
<0.01%#35$567,937256,985$00+256,985New Buy
JANE STREET GROUP, LLC
<0.01%<0.01%#36$512,713231,997$427,389182,645+49,352+27.02%Add
STATE STREET CORP
<0.01%<0.01%#47$474,600214,751$502,517214,75100.00%Unchanged
UBS Group AG
<0.01%<0.01%#37$308,693139,680$7,0413,009+136,671+4,542.07%Add
BRIDGEWAY CAPITAL MANAGEMENT, LLC
<0.01%0.01%#11$253,708114,800$268,632114,80000.00%Unchanged
NORTHERN TRUST CORP
<0.01%<0.01%#41$239,286108,274$283,103120,984-12,710-10.51%Reduce
Point72 Asset Management, L.P.
<0.01%<0.01%#25$230,673104,377$139,62359,668+44,709+74.93%Add
Ionic Capital Management LLC
0.03%0.03%#6$226,963102,698$458,497195,939-93,241-47.59%Reduce
Federation des caisses Desjardins du Quebec
<0.01%#20$202,18091,900$00+91,900New Buy
Shay Capital LLC
0.01%0.01%#8$159,98472,391$164,62870,354+2,037+2.90%Add
CITADEL ADVISORS LLC
<0.01%<0.01%#45$144,97665,600$996,040425,658-360,058-84.59%Reduce
Invesco Ltd.
<0.01%<0.01%#49$141,98164,245$106,17545,374+18,871+41.59%Add
SIMPLEX TRADING, LLC
<0.01%<0.01%#30$135,49961,312$70,91130,304+31,008+102.32%Add
Verdad Advisers, LP
0.11%0.09%#3$113,45051,335$78,28533,455+17,880+53.44%Add
XTX Topco Ltd
<0.01%#15$111,68550,536$00+50,536New Buy
AMERICAN CENTURY COMPANIES INC
<0.01%#38$81,35236,811$00+36,811New Buy
Capital Asset Advisory Services LLC
<0.01%<0.01%#13$71,93132,548$92,43632,54800.00%Unchanged
AXXCESS WEALTH MANAGEMENT, LLC
<0.01%#16$71,93132,548$00+32,548New Buy
Three Seasons Wealth, LLC
0.01%0.03%#10$66,30030,000$70,20030,00000.00%Unchanged
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
<0.01%<0.01%#50$63,12928,565$66,84228,56500.00%Unchanged
Vanguard Global Advisers, LLC
<0.01%<0.01%#42$56,23625,446$59,54425,44600.00%Unchanged
Global Retirement Partners, LLC
<0.01%#17$55,25025,000$00+25,000New Buy
OPPENHEIMER & CO INC
<0.01%#22$50,49922,850$00+22,850New Buy
MILLENNIUM MANAGEMENT LLC
<0.01%#46$42,64919,298$00+19,298New Buy
Assenagon Asset Management S.A.
<0.01%<0.01%#34$41,18618,636$43,60818,63600.00%Unchanged
DLK Investment Management, LLC
0.02%#7$40,76231,355$00+31,355New Buy
Susquehanna Portfolio Strategies, LLC
<0.01%#19$38,95817,628$00+17,628New Buy
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC
<0.01%#18$35,57016,095$00+16,095New Buy
Qube Research & Technologies Ltd
<0.01%#40$30,15313,644$00+13,644New Buy
SG Americas Securities, LLC
<0.01%#48$24,90211,268$00+11,268New Buy
GROUP ONE TRADING LLC
<0.01%<0.01%#39$24,02010,869$43,05618,400-7,531-40.93%Reduce
TWO SIGMA SECURITIES, LLC
<0.01%#14$23,37310,576$00+10,576New Buy
PRUDENTIAL FINANCIAL INC
<0.01%#43$22,98410,400$00+10,400New Buy
CITIGROUP INC
<0.01%<0.01%#51$21,2719,625$44,77619,135-9,510-49.70%Reduce
FNY Investment Advisers, LLC
0.01%0.01%#9$18,3438,300$12,0005,300+3,000+56.60%Add
JONES FINANCIAL COMPANIES LLLP
<0.01%<0.01%#52$17,3527,678$17,8907,67800.00%Unchanged

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow