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RKLB · Rocket Lab Corp · Holdings

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$51.48 +0.12 (+0.23%)
Market Cap
$30.73B
Shares
598.35M
Volume · Oct 20 9.54M Avg daily vol (3M) 19.65M

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.

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,128
Total Value: $40,155,545,330
Total Shares: 398,023,305
Showing 1–100 of 1,207 holdings by value · page 1 of 13

Institutional Ownership Trend

13 quarters

Holder Concentration

Across 1,133 13F filers
Top Holder
10.2%
Dec 2020 → Jun 2026 · range 0.0% – 100.0%
of institutional value
Top 5
33.8%
Dec 2020 → Jun 2026 · range 0.0% – 100.0%
of institutional value
Top 10
52.1%
Dec 2020 → Jun 2026 · range 0.0% – 100.0%
of institutional value
HHI
355
Dec 2020 → Jun 2026 · range 0 – 10,000
Broadly held

Who Holds RKLB

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 1,122 filers, like-for-like change +8.9%; actively managed books +8.4%; index-like books +9.6%.

Holder type Share Filers Change
Registered adviser 34.2% 652 -0.2%
Exempt adviser 0.1% 8 -93.7%
Adviser 13.9% 18 +13.3%
Bank 15.3% 36 +14.4%
Insurer 0.2% 3 -17.4%
Broker-dealer 0.2% 2 +1.1%
Benefit plan 0.2% 5 +15.9%
Non-US 2.3% 7 +44.2%
Holding company 17.5% 11 +12.1%
Unknown 16.3% 380 +25.2%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 15 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Fund Ownership of RKLB by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 14.75% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.21% 13,195,139
Index ETFs 12.54% 75,052,822
Active ETFs 1.13% 6,775,223
Active funds 5.52% 33,024,366
Unclassified 3.77% 22,571,455
All registered funds 25.17% 150,619,005
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 1,207
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 1,207 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1819994 CUSIP 773121108 13F (30d) 177 filings 172 filers Visit website Investor relations