3,440 institutions reported holding IBM as of 2026-03-31, totalling $143.4B. Sourced from SEC Form 13F filings, filed up to 45 days after quarter end.
#
Institution
Value
1
BlackRock, Inc.
$18.8B
2
VANGUARD CAPITAL MANAGEMENT LLC
$14.7B
3
STATE STREET CORP
$13.2B
4
VANGUARD PORTFOLIO MANAGEMENT LLC
$6.7B
5
GEODE CAPITAL MANAGEMENT, LLC
$5.6B
Source: SEC Form 13F filings via SEC EDGAR. Covers long US-listed equity only — short positions, bonds and non-US holdings are not reported on this form.