Aspex Management (HK) Ltd: MKSI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Aspex Management (HK) Ltd on MKSI, newest first. How the timeline and the estimate are built.

Aspex Management (HK) Ltd held 1,820,441 MKSI 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 1,820,441 shares
Change vs previous 13F +281,652 shares
9.13% of the 13F portfolio, value $809,732,000.
13F-HR 0001768375-26-000005 filed by Aspex Management (HK) 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 1,538,789 shares
Change vs previous 13F not available
5.13% of the 13F portfolio, value $353,629,000.
13F-HR 0001768375-26-000004 filed by Aspex Management (HK) 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).