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Spero Therapeutics, Inc.

SPRO
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001701108

No open-market purchases or sales by Spero Therapeutics, Inc. insiders were filed in the last 90 days; 59 institutions reported holding it in 13F filings for Q2 2026, worth $47.5M in total; no superinvestor holds it.

Q1 2024 vs. Q4 2023

How the institutions holding Spero Therapeutics, Inc. changed between Q4 2023 and Q1 2024.

All holders in Q1 2024All holders in Q4 2023

13F holders of SPRO: Q4 2023 compared with Q1 2024
MeasureQ4 2023Q1 2024Change
Holders5054+4
Shares13.8M13.8M−77.9K (−0.6%)
Value$19.6M$23.7M+$4.02M (+20.4%)

New holders (11)

Institutions that held Spero Therapeutics, Inc. at the end of Q1 2024 but not at the end of Q4 2023.

Institutions new to SPRO in Q1 2024
InstitutionSharesValue% of portfolio
Shay Capital LLC306,967$528.0K0.15%
Man Group plc214,026$368.1K0.00%
Bank of Montreal79,500$139.9K0.00%
Bailard, Inc.60,900$104.7K0.00%
Gsa Capital Partners LLP28,319$49.0K0.00%
Virtu Financial LLC18,180$31.0K0.00%
WR Wealth Planners, LLC2,600$4.47K0.00%
Lazard Asset Management LLC1,248$2.00K0.00%
IFP Advisors, Inc650$1.12K0.00%
Raleigh Capital Management Inc.500$8600.00%
CoreCap Advisors, LLC142$2440.00%

Sold out (7)

Institutions that held Spero Therapeutics, Inc. at the end of Q4 2023 and filed for Q1 2024 without it.

Institutions that sold out of SPRO in Q1 2024
InstitutionShares, Q4 2023Value, Q4 2023
Ameriprise Financial Inc402,963$592.4K
Citadel Advisors LLC32,274$47.4K
Susquehanna International Group, LLP18,086$26.6K
Bourgeon Capital Management LLC15,100$22.2K
Two Sigma Securities, LLC10,301$15.1K
Group One Trading, L.P.4,590$6.75K
Royal Bank of Canada315$0