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Reading a Form 13F: BlackRock's largest reported position, its change in shares and the top-ten share, 30 June 2026

ToolFund Holdings (13F)
SourceBlackRock, Inc. (2026). Form 13F-HR: Report for the Calendar Quarter Ended June 30, 2026, filed 7 August 2026. U.S. Securities and Exchange Commission, EDGAR accession 0002012383-26-003238; and the report for March 31, 2026, accession 0002012383-26-001841. Read from the SEC's Form 13F Data Sets.
LevelUndergraduate

Problem

BlackRock's Form 13F for 30 June 2026 states a total value of 6,729,538,649,155 dollars in 5,696 positions. The largest is NVIDIA Corporation common stock: 1,941,918,386 shares valued at 388,558,449,933 dollars; the report for 31 March 2026 listed 1,925,533,174 shares. The ten largest positions add up to 1,884,619,646,468 dollars. Find the position's share of the reported total, the change in shares, and the share of the total held in the ten largest positions; then say what the report does not show.

Inputs to Enter

  • Manager BlackRock, Inc. (the default, first in the list); company box as loaded or blank
Open the Fund Holdings (13F) tool (loaded with this example)

Answers

  • Share of the reported total: 388,558,449,933 / 6,729,538,649,155 = 5.77 %
  • Change in shares: 1,941,918,386 − 1,925,533,174 = +16,385,212, or +0.9 %
  • Ten largest positions: 1,884,619,646,468 / 6,729,538,649,155 = 28.0 % of the reported total
  • Not in the report: short positions, cash, bonds other than some convertibles, shares listed only abroad, and anything traded after 30 June; the report was filed 38 days after the quarter end

Notes

The tool's default manager is the one with the largest reported total; press Submit. The figures are those of the two quarters loaded on 13 November 2026 and change when a later quarter is loaded. Only the 500 largest positions of each report are kept on the site. Values are in dollars as Form 13F has required since 3 January 2023. The page describes reported positions; it does not recommend copying them. A calculator for education and analysis, not investment advice.