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IBM · International Business Machines Corp

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$238.79 +8.92 (+3.88%) At close · Aug 27
Market Cap
$224.97B
Shares
942.13M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 3,636
Total Value: $181,502,169,092
Total Shares: 646,876,086
Showing 1–100 of 3,757 holdings by value · page 1 of 38

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 3,636 13F filers · Δ vs Mar 31, 2026
Top Holder
11.9%
Sep 2023 → Jun 2026 · range 11.9% – 15.8%
−0.7 pts
Top 5
38.1%
Sep 2023 → Jun 2026 · range 38.1% – 44.9%
−1.6 pts
Top 10
49.5%
Sep 2023 → Jun 2026 · range 49.5% – 55.5%
−3.5 pts
HHI
393
Sep 2023 → Jun 2026 · range 393 – 566
Broadly held−36

Quarterly Activity

vs Mar 31, 2026
New
336
Increased
1,641
Decreased
1,237
Sold Out
203
Unchanged
422
Holder count: +133
Institutional value: +21.9%
Shares held: +5.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 3,757
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 51143 CUSIP 459200101 13F (30d) 2208 filings 2156 filers Visit website Investor relations