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FMR LLC

SEC CIK
0000315066
Latest filing
Aug 13, 2026

SPRO holding history

Spero Therapeutics, Inc. in every 13F filed by FMR LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

SPRO overviewAll 13F holders of SPROFull Q2 2026 holdings

Shares (Q2 2026)
300
Value
$663
% of portfolio
<0.1%
Quarters held
12
Since Q1 2021
Holdings of SPRO by FMR LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026300$663<0.1%+300NewHolders
Q4 20250$00.0%−550−100.0%Sold outHolders
Q3 2025550$1.03K<0.1%+550NewHolders
Q2 20250$00.0%−5,056−100.0%Sold outHolders
Q1 20255,056$3.64K<0.1%+767+17.9%AddedHolders
Q4 20244,289$4.42K<0.1%+1,150+36.6%AddedHolders
Q3 20243,139$4.21K<0.1%+250+8.7%AddedHolders
Q2 20242,889$3.76K<0.1%+500+20.9%AddedHolders
Q1 20242,389$4.11K<0.1%+2,200+1,164.0%AddedHolders
Q4 2023189$278<0.1%+189NewHolders
Q3 20230$00.0%−4−100.0%Sold outHolders
Q2 20234$6<0.1%+4NewHolders
Q3 20220$00.0%−4,120−100.0%Sold outHolders
Q2 20224,120$3.00K<0.1%+4,017+3,900.0%AddedHolders
Q1 2022103$1.00K<0.1%+103NewHolders
Q2 20210$00.0%−8,552−100.0%Sold outHolders
Q1 20218,552$126.0K<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.