XTX Topco Ltd: ARM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of XTX Topco Ltd on ARM, newest first. How the timeline and the estimate are built.

XTX Topco Ltd held 3,566 ARM shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

period ended2026-06-30
13F 3,566 shares
Change vs previous 13F -83,738 shares
0.02% of the 13F portfolio, value $1,264,397.
13F-HR 0001828301-26-000005 filed by XTX Topco Ltd
Filed 2026-08-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 87,304 shares
Change vs previous 13F not available
0.23% of the 13F portfolio, value $13,207,349.
13F-HR 0001828301-26-000004 filed by XTX Topco Ltd
Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
Acceptance time not in the bulk data set (spec §4.2).