Marex Group plc
"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.
13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.
We backtested copying it. Buying this fund's new positions the day each filing went public, over 12 quarters, returned +6.0% per quarter versus +4.3% from owning every 13F stock, beating that baseline in 58.3% of quarters (excess t = 2.04, statistically significant). Caveat: across all 5,072 funds we tested, past performance shows near-zero persistence (rank correlation −0.018) — with thousands of funds, some will look significant by chance alone.
Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)
Top 20 holdings of 883 · 2026 Q1
| Ticker | Value | Weight | QoQ |
|---|---|---|---|
| LITE | $602M | | NEW |
| MSTR | $426M | | ADD |
| AVGO | $404M | | ADD |
| SNDK | $352M | | NEW |
| MA | $276M | | ADD |
| NVDA | $259M | | TRIM |
| TSLA | $241M | | TRIM |
| UNH | $221M | | TRIM |
| ASTS | $219M | | TRIM |
| IBIT | $207M | | TRIM |
| QQQ | $196M | | ADD |
| GS | $191M | | ADD |
| BKNG | $186M | | ADD |
| BMNR | $181M | | TRIM |
| MSFT | $157M | | ADD |
| IREN | $134M | | TRIM |
| LLY | $134M | | ADD |
| MRVL | $132M | | ADD |
| SGOV | $122M | | ADD |
| AMAT | $120M | | ADD |
QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.
New positions in 2026 Q1
Method & Limitations
Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.