Spero Therapeutics, Inc. - SPRO

Sector: Healthcare · Industry: Pharmaceutical Preparations

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Company profile

Quarter snapshot

Latest / Compare

Q3 2026 · Q2 2026

Value (USD)

Total reported value ($000)

$47.73M

QoQ value delta ($000)

-$142K (-0.3%)

Implied price effect (QoQ)

-0.08%

Total shares

21,587,741

QoQ shares delta

-47,829 (-0.22%)

Total shares held by funds (by quarter)

Shares (left)

Fund holders include prior positions carried forward until a new 13F confirms a change. Reported holders have reported a position in this security for that quarter; this is not the total number of 13F filers.

Market chart (SPRO)

Interactive chart by TradingView.

Top holders (Q3 2026)

Top 25 only Full list

Partial Q3 2026 data: 5 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.

Manager	Value ($000)	Shares	% of 13F
GSK plc	20,311	9,190,606	3.37%
PFIZER INC	5,338	2,362,348	3.13%
VANGUARD CAPITAL MANAGEMENT LLC	4,500	2,036,226	0.0%
RENAISSANCE TECHNOLOGIES LLC	2,094	947,904	0.0%
Alphabet Inc.	1,966	889,979	0.0%
SUSQUEHANNA INTERNATIONAL GROUP, LLP	1,784	807,590	0.0%
BlackRock, Inc.	1,313	594,404	0.0%
GEODE CAPITAL MANAGEMENT, LLC	1,252	566,329	0.0%
RAYMOND JAMES FINANCIAL INC	1,152	521,705	0.0%
TWO SIGMA INVESTMENTS, LP	846	382,814	0.0%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	735	332,970	0.0%
VANGUARD FIDUCIARY TRUST CO	635	287,648	0.0%
GSA CAPITAL PARTNERS LLP	632	285,906	0.04%
DIMENSIONAL FUND ADVISORS LP	607	274,820	0.0%
GOLDMAN SACHS GROUP INC	567	256,985	0.0%
JANE STREET GROUP, LLC	512	231,997	0.0%
STATE STREET CORP	474	214,751	0.0%
UBS Group AG	308	139,680	0.0%
BRIDGEWAY CAPITAL MANAGEMENT, LLC	253	114,800	0.0%
NORTHERN TRUST CORP	239	108,274	0.0%
Point72 Asset Management, L.P.	230	104,377	0.0%
Ionic Capital Management LLC	226	102,698	0.03%
Federation des caisses Desjardins du Quebec	202	91,900	0.0%
Shay Capital LLC	159	72,391	0.01%
CITADEL ADVISORS LLC	144	65,600	0.0%