TimesSquare Capital Management, LLC: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of TimesSquare Capital Management, LLC on IONS, newest first. How the timeline and the estimate are built.

TimesSquare Capital Management, LLC held 614,070 IONS shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

period ended2026-06-30
13F 614,070 shares
Change vs previous 13F +338,396 shares
0.72% of the 13F portfolio, value $48,689,610.
13F-HR 0001193125-26-339056 filed by TimesSquare Capital Management, LLC
Filed 2026-08-07 (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 275,674 shares
Change vs previous 13F not available
0.35% of the 13F portfolio, value $20,700,361.
13F-HR 0001193125-26-210169 filed by TimesSquare Capital Management, LLC
Filed 2026-05-07 (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).