Skip to main content

BlackRock, Inc.

Position in SPRO — Spero Therapeutics, Inc.

CIK 2012383 New York, NY

Position in SPRO

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$1,313,630
+$299,938 QoQ
Shares Held
594,404
+37.2% QoQ
Ownership
1.02%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#7
of 59 holders
Holding Since
Sep 2024
8 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

BlackRock, Inc. holds $85,603,777,939 across 474 Biotechnology names. SPRO ranks #318 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SPRO

Export CSV
8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,313,630 594,404
2026-03-31 $1,013,692 433,202
2025-12-31 $1,010,324 433,616
2025-09-30 $817,363 434,768
2025-06-30 $1,260,826 434,768
2025-03-31 $347,098 482,082
2024-12-31 $499,911 485,352
2024-09-30 $649,657 484,820