RKLB in the 13F filings

Rocket Lab Corp · CUSIP 773121108

Sector · Industrials Theme · Aerospace and defence

Quarter

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

Quarter end: 31 Dec 2025; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 23 Jan 2026
Managers listing it: 34; at least, of 95 tracked, among listed positions
Comparable managers: 92; filed both Q3 2025 and Q4 2025; 10 listed it in both
Shares listed: 63,448,747; combined, among listed positions
Reported value: $4.4bn; combined, at the quarter end

Among the 92 comparable managers: 19 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,091,466.

Managers listing RKLB in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 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

34 of 34 holders

				Action		Filing
Baillie Gifford & Co	17,851,446	$1.2bn	1.03%	Added	+5,725,536	23 Jan 2026 (the filing on sec.gov)
Capital World Investors	16,200,726	$1.1bn	0.15%	Added	+1,738,623	11 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.	6,644,372	$464m	0.25%	Trimmed	-2,869,280	17 Feb 2026 (the filing on sec.gov)
Invesco Ltd	5,260,681	$367m	under 0.1%	Trimmed	-559,782	19 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	4,272,814	$298m	under 0.1%	Added	+236,133	17 Feb 2026 (the filing on sec.gov)
ARK Investment Management LLC	2,235,260	$156m	1.03%	Trimmed	-251,535	11 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP	2,137,856	$149m	under 0.1%	Trimmed	-52,276	17 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	1,648,489	$115m	under 0.1%	Added	+12,383	17 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC	1,260,966	$88m	0.31%	Trimmed	-849,026	17 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC	915,100	$64m	0.10%	New	new	12 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC	879,636	$61m	under 0.1%	Trimmed	-305,825	17 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	821,307	$57m	under 0.1%	Added	+157,053	27 Oct 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	799,739	$56m	0.25%	Added	+785,957	17 Feb 2026 (the filing on sec.gov)
Millennium Management LLC	567,426	$40m	under 0.1%	Added	+74,881	17 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC	264,643	$18m	under 0.1%	Trimmed	-45,105	17 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC	260,271	$18m	under 0.1%	Trimmed	-202,769	13 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	182,455	$13m	under 0.1%	Added	+161,955	17 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC	180,473	$13m	under 0.1%	Added	+58,171	13 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC	162,950	$11m	under 0.1%	Added	+79,185	13 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP	143,395	$10m	under 0.1%	New	new	13 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP	143,121	$10.0m	under 0.1%	Trimmed	-92,714	17 Feb 2026 (the filing on sec.gov)
Man Group PLC	133,519	$9.3m	under 0.1%	Trimmed	-519,362	17 Feb 2026 (the filing on sec.gov)
Steadfast Capital Management LP	112,500	$7.8m	0.13%	New	new	17 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP	63,463	$4.4m	under 0.1%	Added	+50,477	17 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP	55,978	$3.9m	under 0.1%	Trimmed	-22,487	17 Feb 2026 (the filing on sec.gov)

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Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Baillie Gifford & Coexisting position · 17,851,446 shares now+5,725,536
Capital World Investorsexisting position · 16,200,726 shares now+1,738,623
Renaissance Technologies LLCnew position · 915,100 shares now+915,100
Schonfeld Strategic Advisors LLCexisting position · 799,739 shares now+785,957
Fidelity (FMR LLC)existing position · 4,272,814 shares now+236,133

Reductions

D. E. Shaw & Co.existing position · 6,644,372 shares now-2,869,280
Jane Street Group LLCexisting position · 37,457 shares now-1,618,288
Voloridge Investment Management LLCexisting position · 1,260,966 shares now-849,026
Invesco Ltdexisting position · 5,260,681 shares now-559,782
Man Group PLCexisting position · 133,519 shares now-519,362

New positions and exits

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

New (7)

Exited (2)

Tudor Investment Corpwas $26m
Quantbot Technologies LPwas $584k

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.

9 in Q2 2025 to 13 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.

RKLB and RTX →RKLB and BA →RKLB and TDG →Choose a stock to compare with RKLB →

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 RKLB, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q2 2025	9	$1.2bn	9	0
Q3 2025	11	$2.1bn	7	5
Q4 2025	15	$3.8bn	19	17
Q1 2026	17	$2.6bn	18	20
Q2 2026	13	$4.5bn	15	23