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IBM · International Business Machines Corp

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Market Cap
$221.87B
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: 3,650
Total Value: $181,911,788,567
Total Shares: 648,332,718
Showing 1–100 of 3,772 holdings by value · page 1 of 38

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 3,650 13F filers · Δ vs Mar 31, 2026
Top Holder
11.9%
Sep 2023 → Jun 2026 · range 11.9% – 15.8%
−0.8 pts
Top 5
38.0%
Sep 2023 → Jun 2026 · range 38.0% – 44.9%
−1.7 pts
Top 10
49.4%
Sep 2023 → Jun 2026 · range 49.4% – 55.5%
−3.6 pts
HHI
391
Sep 2023 → Jun 2026 · range 391 – 566
Broadly held−37

Quarterly Activity

vs Mar 31, 2026
New
335
Increased
1,647
Decreased
1,246
Sold Out
194
Unchanged
422
Holder count: +141
Institutional value: +22.2%
Shares held: +5.5%

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 3,772
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 51143 CUSIP 459200101 13F (30d) 1603 filings 1513 filers Visit website Investor relations