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MILLENNIUM MANAGEMENT LLC

Position in MREO — Mereo BioPharma Group plc

CIK 1273087 NEW YORK, NY

Position in MREO

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,174,503
+$1,139,623 QoQ
Shares Held
3,559,103
+4155.0% QoQ
Ownership
2.23%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2020
22 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MREO Over Time

Shares Held

Position Value (USD)

Derivatives in MREO

reported options exposure · as of Sep 30, 2025
CallValue
$0
CallShares
0
PutValue
$118,862
PutShares
57,700

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MILLENNIUM MANAGEMENT LLC holds $4,596,585,112 across 322 Biotechnology names.

# Ticker Company Shares Value (USD) Open

All Filings in MREO

Export CSV
27 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,174,503 3,559,103
2025-12-31 $34,880 83,646
2025-09-30 $695,256 337,503
2025-09-30 $118,862 57,700
2025-06-30 $1,614,273 595,673
2025-06-30 $414,630 153,000
2025-06-30 $782,377 288,700
2025-03-31 $887,469 394,431
2025-03-31 $649,575 288,700
2024-12-31 $13,879,012 3,965,432
2024-12-31 $166,950 47,700
2024-09-30 $22,172,180 5,394,691
2024-06-30 $11,526,138 3,201,705
2024-03-31 $7,191,145 2,179,135
2023-12-31 $3,257,832 1,410,317
2023-09-30 $1,604,224 1,243,585
2023-06-30 $1,260,693 955,071
2023-03-31 $1,771,480 2,505,630
2022-12-31 $983,511 1,311,349
2022-09-30 $1,079,359 1,253,611
2022-06-30 $786,123 701,896
2022-03-31 $1,028,224 918,058
2021-12-31 $1,521,654 951,034
2021-09-30 $3,471,596 1,434,544
2021-06-30 $5,274,721 1,663,950
2021-03-31 $8,726,166 2,589,367
2020-12-31 $577,024 161,180