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MILLENNIUM MANAGEMENT LLC

Position in SPRO — Spero Therapeutics, Inc.

CIK 1273087 NEW YORK, NY

Position in SPRO

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$42,648
-$13,521 QoQ
Shares Held
19,298
-19.9% QoQ
Ownership
0.033%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#38
of 59 holders
Holding Since
Mar 2020
18 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SPRO Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MILLENNIUM MANAGEMENT LLC holds $4,631,421,099 across 322 Biotechnology names. SPRO ranks #314 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SPRO

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18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $42,648 19,298
2025-12-31 $56,169 24,107
2024-09-30 $43,110 32,172
2024-06-30 $128,073 98,518
2024-03-31 $254,339 147,872
2023-12-31 $218,819 148,857
2023-09-30 $144,829 119,694
2023-06-30 $542,082 373,850
2023-03-31 $717,084 494,541
2022-12-31 $1,516,168 876,398
2022-09-30 $1,376,792 688,396
2022-06-30 $233,150 314,643
2022-03-31 $532,970 61,261
2021-03-31 $185,987 12,635
2020-12-31 $1,125,822 58,062
2020-09-30 $1,457,205 130,574
2020-06-30 $486,985 35,993
2020-03-31 $113,564 14,055