BLK in the 13F filings

Blackrock Inc · CUSIP 09290D101

Sector · Other financial services Theme · Financial services· L3VLUP-defined

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024

Quarter end: 31 Mar 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 1 May 2026
Managers listing it: 40; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 31 listed it in both
Shares listed: 17,253,226; combined, among listed positions
Reported value: $16.6bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 26 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,782,720.

Managers listing BLK in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

40 of 40 holders

				Action		Filing
Capital Research Global Investors	4,610,418	$4.4bn	0.69%	Added	+771,481	13 May 2026 (the filing on sec.gov)
Wellington Management Group LLP	3,644,668	$3.5bn	0.65%	Added	+2,193,546	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	1,683,432	$1.6bn	0.09%	Trimmed	-309,186	15 May 2026 (the filing on sec.gov)
MFS Investment Management	1,095,157	$1.1bn	0.36%	Trimmed	-72,842	14 May 2026 (the filing on sec.gov)
Capital World Investors	780,008	$750m	0.10%	Trimmed	-203,609	13 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	703,107	$676m	0.11%	Added	+299,288	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	641,558	$617m	0.26%	Added	+133,438	15 May 2026 (the filing on sec.gov)
Invesco Ltd	635,138	$611m	0.06%	Trimmed	-116,170	12 May 2026 (the filing on sec.gov)
ValueAct Holdings LP	546,100	$525m	9.19%	Trimmed	-148,900	15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	534,596	$514m	0.06%	Added	+4,890	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	440,194	$418m	0.19%	Added	+351,566	15 May 2026 (the filing on sec.gov)
AllianceBernstein LP	299,442	$321m	0.10%	Trimmed	-29,493	15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	315,260	$303m	0.23%	Trimmed	-5,160	27 Oct 2026 (the filing on sec.gov)
Markel Group Inc	220,200	$212m	1.77%	Held	0	1 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	210,304	$202m	0.26%	Added	+176,169	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	193,021	$186m	0.15%	Added	+148,999	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	146,913	$141m	0.08%	Added	+76,655	15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	73,466	$71m	0.08%	Trimmed	-58,057	15 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC	72,869	$70m	0.28%	Trimmed	-32,907	15 May 2026 (the filing on sec.gov)
Jane Street Group LLC	68,659	$66m	under 0.1%	Trimmed	-87,806	12 May 2026 (the filing on sec.gov)
Woodline Partners LP	57,288	$55m	0.21%	Added	+2,649	15 May 2026 (the filing on sec.gov)
Harris Associates LP	54,555	$52m	0.07%	Added	+146	15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	53,152	$51m	0.07%	Trimmed	-115,343	15 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP	36,846	$35m	under 0.1%	New	new	14 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	33,077	$32m	under 0.1%	Trimmed	-20,207	15 May 2026 (the filing on sec.gov)

Page 1 of 2

What managers have written about BLK

Shown because the letter names the company. A letter is commentary; it is not a record of why a position changed.

By writers not tracked in the 13F universe

Larry Fink's 2026 annual chairman's letter to investors · BlackRock · 23 Mar 2026 · The writer’s own company
Larry Fink's 2023 letter to investors, in BlackRock's 2022 annual report · BlackRock · 15 Mar 2023 · The writer’s own company

Their positions are not shown: no 13F filings of theirs are tracked here.

Every letter beside its positions →

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Wellington Management Group LLPexisting position · 3,644,668 shares now+2,193,546
Capital Research Global Investorsexisting position · 4,610,418 shares now+771,481
AQR Capital Management LLCexisting position · 440,194 shares now+351,566
Citadel Advisors LLCexisting position · 703,107 shares now+299,288
Balyasny Asset Management LLCexisting position · 210,304 shares now+176,169

Reductions

Fidelity (FMR LLC)existing position · 1,683,432 shares now-309,186
Capital World Investorsexisting position · 780,008 shares now-203,609
ValueAct Holdings LPexisting position · 546,100 shares now-148,900
Invesco Ltdexisting position · 635,138 shares now-116,170
Point72 Asset Management LPexisting position · 53,152 shares now-115,343

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (5)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

16 in Q4 2024 to 36 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

BLK and V →BLK and AXP →BLK and BAC →Choose a stock to compare with BLK →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own BLK, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q4 2024	16	$13.9bn	16	0
Q1 2025	28	$13.5bn	20	7
Q2 2025	18	$14.6bn	11	7
Q3 2025	23	$16.9bn	11	10
Q4 2025	34	$15.3bn	32	13
Q1 2026	30	$16.5bn	17	26
Q2 2026	36	$18.6bn	26	18