SPACE EXPLORATION TECHN (SPCX) Institutional Ownership & Top Holders
The most recent SEC Form 13F filings (Q2 2026) show 30 hedge funds and institutional investors holding a combined 432.1M shares of SPACE EXPLORATION TECHN (SPCX), valued at $73.8B. The median portfolio weight is 2.5%.
Quarterly institutional ownership changes in SPCX show net buying, with the combined position increasing by 432.1M shares from the previous quarter.
Among 13F filers, the funds with the highest portfolio allocation to SPCX are a16z (90.0% of its 13F portfolio), Alpha Wave Global (85.5%), and Thrive Capital Management (84.8%). In Q2 2026, a16z made the largest position increase (+90.0%).
Top 10 Institutional Holders in SPACE EXPLORATION TECHN (SPCX), Ranked by Portfolio Weight
Based on the latest SEC Form 13F filings (Q2 2026).
| # | Fund | Shares | Market Value | Portfolio Weight |
|---|---|---|---|---|
| 1 | a16z | 74,855,020 | $12.8B | 90.0% |
| 2 | Alpha Wave Global | 31,246,965 | $5.3B | 85.5% |
| 3 | Thrive Capital Management | 18,914,205 | $3.2B | 84.8% |
| 4 | Darsana | 101,461,915 | $17.3B | 77.8% |
| 5 | D1 Capital | 126,042,232 | $21.5B | 61.9% |
| 6 | Lightspeed | 7,300,055 | $1.2B | 51.9% |
| 7 | Harvard Management Company | 12,935,100 | $2.2B | 51.8% |
| 8 | SCGE MANAGEMENT | 16,981,350 | $2.9B | 49.2% |
| 9 | Dragoneer | 8,000,000 | $1.4B | 48.2% |
| 10 | RIT Capital Partners | 1,634,820 | $279.0M | 45.0% |
- 30Institutional investors
- 432,111,827Shares held (disclosed)
- $73.8B13F market value
- 2.5%Median portfolio weight
Ownership History
Quarter-by-quarter share count, market value, and portfolio conviction weight (up to 5 of the heaviest weight-by-portfolio funds) of SPCX. Sourced from 13F filings; reflects long equity positions only.
Quarter-over-Quarter ActivityQ2 2026
The biggest weight-increase and weight-decrease changes among funds that hold SPCX. Deltas compare the selected filing to the previous reporting quarter.
Top buyers
- a16z+90.0% · +74,855,020 shares
- Alpha Wave Global+85.5% · +31,246,965 shares
- Thrive Capital Management+84.8% · +18,914,205 shares
Top sellers
No notable sellers this quarter.
Options Activity
- Total puts640,000 (+640,000)
Ownership Statistics
- Funds holding
- 30
- Median weight
- 2.5%
- Largest holder
- a16z · 90.0%
- Smallest holder
- UTIMCO - The University of Texas · 0.0%
- Shares held
- 432,111,827 (+432,111,827)
All Institutional HoldersSortable · searchable
All institutional investors (Max 50) holding SPCX in the selected quarter. Click a fund name to drill into its full 13F portfolio.
| 1 | a16z | 74,855,020 | $12.8B | 90.0% |
| 2 | Alpha Wave Global | 31,246,965 | $5.3B | 85.5% |
| 3 | Thrive Capital Management | 18,914,205 | $3.2B | 84.8% |
| 4 | Darsana | 101,461,915 | $17.3B | 77.8% |
| 5 | D1 Capital | 126,042,232 | $21.5B | 61.9% |
| 6 | Lightspeed | 7,300,055 | $1.2B | 51.9% |
| 7 | Harvard Management Company | 12,935,100 | $2.2B | 51.8% |
| 8 | SCGE MANAGEMENT | 16,981,350 | $2.9B | 49.2% |
| 9 | Dragoneer | 8,000,000 | $1.4B | 48.2% |
| 10 | RIT Capital Partners | 1,634,820 | $279.0M | 45.0% |
| 11 | Regents of the University of California | 6,000,000 | $1.0B | 23.5% |
| 12 | XN LP | 3,000,000 | $512.6M | 13.5% |
| 13 | Coatue Management | 18,561,780 | $3.2B | 6.5% |
| 14 | Diameter Capital Partners | 250,000 | $42.7M | 4.5% |
| 15 | Altimeter | 1,776,485 | $303.5M | 3.1% |
| 16 | Greenoaks | 257,730 | $44.0M | 1.9% |
| 17 | M & L Capital Management | 34,500 | $5.9M | 1.6% |
| 18 | Avantyr Capital Partners | 244,028 | $41.7M | 1.5% |
| 19 | Avala Global | 200,000 | $34.2M | 1.3% |
| 20 | Third Point | 180,415 | $30.8M | 0.7% |
| 21 | Viking Global | 1,200,000 | $205.0M | 0.6% |
| 22 | Appaloosa | 225,000 | $38.4M | 0.5% |
| 23 | Ripple Effect Asset Management | 5,000 | $854.3K | 0.5% |
| 24 | Pentwater Capital Management | 230,000 | $39.3M | 0.3% |
| 25 | Tiger Global | 375,000 | $64.1M | 0.3% |
| 26 | Dorsal Capital Management | 40,000 | $6.8M | 0.2% |
| 27 | Whale Rock | 152,517 | $26.1M | 0.2% |
| 28 | Columbus Hill Capital Management | 1,000 | $170.9K | 0.0% |
| 29 | Polen Capital Management | 6,705 | $1.1M | 0.0% |
| 30 | UTIMCO - The University of Texas | 5 | $854 | 0.0% |
Methodology & FAQ
Methodology: How We Track SPCX Institutional Holdings
Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).
- Who must file: This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
- What is included: We capture long positions in Section 13(f) securities for SPACE EXPLORATION TECHN CORP (SPCX). By SEC regulation, 13F filings do not require the disclosure of short positions, non-U.S. holdings, or OTC derivatives. Listed options are excluded from portfolio weight calculations to ensure comparability across filers.
- Metric definition: “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to SPCX on the specific reporting date.
- How to use this data: Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
How do you measure hedge fund conviction and institutional concentration in SPCX?
We evaluate fund conviction by looking at portfolio weight rather than just absolute share count. By tracking how the largest holders , such as a16z , Alpha Wave Global , and Thrive Capital Management as of Q2 2026, change their position sizing quarter-over-quarter, we help investors distinguish between deliberate position sizing changes and passive mark-to-market drift.
Does the SPCX ownership data include short interest or options?
SEC Form 13F mandates the disclosure of long positions in Section 13(f) securities, which includes equities and listed options (put and call contracts), but excludes short interest, swaps, and OTC derivatives by regulatory design. On this platform, listed options are excluded from portfolio weight calculations to ensure comparability across filers.
Are family offices and university endowments included in this SPCX data?
Yes. In addition to traditional hedge funds and large asset managers, any institutional entity exercising investment discretion over at least $100 million in Section 13(f) securities must file a Form 13F. This explicitly includes single-family offices and university endowments. If a qualifying family office or endowment holds SPCX stock, their allocation is systematically aggregated alongside traditional fund data.
When is the institutional ownership data updated, and is there a reporting lag?
Institutional investment managers are required to file their Form 13F within 45 days after the end of a calendar quarter (the standard “T+45” window). Our platform re-ingests new filings from the SEC EDGAR database on a nightly cycle, typically within 24–48 hours of publication, providing a point-in-time snapshot of reported consensus positioning for SPCX as of each filing date.