Fund · ARK Space & Defense Innovation ETF · measured from SEC filings
ARKX holdings
ARKX reports 36 holdings and behaves like 24.1 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-07-31. The fact sheet publishes the first number; this page computes the second, and traces it across 21 quarters of filings.
Measured concentration
as of 2026-07-31Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 100% at a quoted market price (level 1), 8 issuer countries.
What stands out
as of 2026-07-31ARKX's largest investment is L3harris Technologies Inc at 7.83% of net assets. Rocket LAB Corp and Teradyne Inc follow; the three together are 22.25%. Ten companies are 54.25% of the fund; the other 26 share the rest. Among the 721 equity funds measured here, ARKX behaves like 24.1 holdings against a median of 42.4 — 1.8 times more concentrated than the median. Across 21 quarterly filings ARKX has held roughly steady since 2021-04-30 (25.6 then, 22.9 now). Between the 2026-01-30 and 2026-04-30 filings 3 positions were added and 3 dropped; 11.2% of the weight moved. the United States is the largest country at 86.77% of the portfolio, across 8 countries in the filing.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.
Every filing since 2021
21Between 2021-04-30 and 2026-04-30, ARKX went from behaving like 25.6 equally weighted positions to 22.9 — 10% fewer, while its top ten went from 51.95% to 56.69% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-04-30 | 34 | 22.9 | 56.69% | 7.83% |
| 2026-01-30 | 34 | 19.8 | 62.44% | 8.89% |
| 2025-10-31 | 34 | 19 | 64.6% | 9.18% |
| 2025-07-31 | 32 | 19.3 | 63.82% | 10.22% |
| 2025-04-30 | 33 | 19.8 | 63.18% | 9.4% |
| 2025-01-31 | 33 | 19.2 | 63.69% | 9.79% |
| 2024-10-31 | 33 | 19.9 | 61.81% | 9.4% |
| 2024-07-31 | 35 | 20.5 | 60.31% | 9.57% |
Earlier filings (13 more, back to 2021-04-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-04-30 | 35 | 20.5 | 59.82% | 9.33% |
| 2024-01-31 | 36 | 21.4 | 59.54% | 8.66% |
| 2023-10-31 | 36 | 21.4 | 58.55% | 8.78% |
| 2023-07-31 | 36 | 24 | 55% | 7.95% |
| 2023-04-28 | 36 | 21.8 | 58.2% | 8.99% |
| 2023-01-31 | 37 | 22.3 | 57.28% | 9.38% |
| 2022-10-31 | 36 | 21.5 | 57.55% | 10.13% |
| 2022-07-29 | 35 | 21.1 | 57.43% | 10.77% |
| 2022-04-29 | 35 | 22.1 | 57.96% | 9.57% |
| 2022-01-31 | 36 | 21.9 | 57.15% | 9.73% |
| 2021-10-29 | 37 | 23.5 | 54.19% | 9.55% |
| 2021-07-30 | 38 | 23.4 | 54.54% | 10.07% |
| 2021-04-30 | 39 | 25.6 | 51.95% | 9.1% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-04-30The 15 largest of 36 positions in ARKX's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: ARKX.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | L3HARRIS TECHNOLOGIES INC | 7.83% | 7.8% |
| 2 | ROCKET LAB CORP | 7.78% | 15.6% |
| 3 | TERADYNE INC | 6.64% | 22.2% |
| 4 | ADVANCED MICRO DEVICES INC | 6.14% | 28.4% |
| 5 | DEERE & COMPANY | 5.85% | 34.2% |
| 6 | KRATOS DEFENSE & SECURITY SOLUTIONS INC | 5.45% | 39.7% |
| 7 | AEROVIRONMENT INC | 5.01% | 44.7% |
| 8 | AMAZON.COM INC | 4.23% | 48.9% |
| 9 | ALPHABET INC | 4.04% | 53.0% |
| 10 | ARCHER AVIATION INC (NEW) | 3.72% | 56.7% |
| 11 | TRIMBLE INC | 3.69% | 60.4% |
| 12 | IRIDIUM COMMUNICATIONS INC | 3.56% | 63.9% |
| 13 | PALANTIR TECHNOLOGIES INC | 3.08% | 67.0% |
| 14 | KOMATSU LTD | 2.90% | 69.9% |
| 15 | JOBY AVIATION INC | 2.47% | 72.4% |
By country of issuer
as of 2026-04-30Share of ARKX's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.
| Country | Share |
|---|---|
| United States | 88.15% |
| Japan | 2.90% |
| France | 1.91% |
| Israel | 1.79% |
| Switzerland | 1.62% |
| Taiwan | 1.50% |
| Cayman Islands° | 1.35% |
| Netherlands° | 0.79% |
Returns the fund reported
2021-03 – 2026-04Monthly total returns from Item B.5 of ARKX's own filings, 62 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference — percentage points over 0 months, which is roughly the distributions. Every month with the filing it came from: ARKX.json · all funds.
Who borrows ARKX's shares
2026-07-31The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-07-31, $150m was out to 1 borrower.
| Borrower | On loan | Share of the loan |
|---|---|---|
| MORGAN STANLEY & CO LLC | $150m | 100.0% |
The filing reports no cash collateral position against this loan. Collateral taken in a form the fund does not hold as a position does not appear in N-PORT, so this is silence rather than absence. What the collateral figure can and cannot show. Every quarter ARKX has filed, with each borrower: ARKX.json · all funds.
Since the previous filing
2026-01-30 → 2026-04-3034 positions became 34: 3 added (3.7% of the fund at the later date), 3 dropped (1.6% at the earlier date). Half the sum of all weight changes, a turnover proxy: 11.2%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of ARKX compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-01-30 | 2026-04-30 | Largest decreases | 2026-01-30 | 2026-04-30 |
|---|---|---|---|---|---|
| ADVANCED MICRO DEVICES INC | 4.41% | 6.14% | KRATOS DEFENSE & SECURITY SOLUTIONS INC | 8.21% | 5.45% |
| ALPHABET INC | 2.70% | 4.04% | AEROVIRONMENT INC | 6.73% | 5.01% |
| AMAZON.COM INC | 3.16% | 4.23% | TERADYNE INC | 7.90% | 6.64% |
| INTUITIVE MACHINES INC | 1.86% | 2.42% | ROCKET LAB CORP | 8.89% | 7.78% |
| JD LOGISTICS INC | 0.81% | 1.35% | L3HARRIS TECHNOLOGIES INC | 8.77% | 7.83% |
| DEERE & COMPANY | 5.50% | 5.85% | ARCHER AVIATION INC (NEW) | 4.47% | 3.72% |
New: TESLA INC (2.38%), X-ENERGY INC (1.23%), Goldman Sachs Financial Square Treasury Obligations Fund (0.14%). Gone: Dassault Systemes SE (0.90%), Goldman Sachs Financial Square Treasury Obligations Fund (0.44%), The 3D Printing ETF (0.27%).
Asset categories and pricing
as of 2026-07-3199.84% equity, 0.16% short-term investment as filed; 100.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Neighbours by effective holdings, equity funds
10Every measured equity fund lined up by how many holdings it behaves like; these sit either side of ARKX (24.1). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| ARKF ARK Blockchain & Fintech Innovation ETF | 41 | 23.7 | 54.61% | 2026-07-31 |
| VPU Vanguard Utilities Index Fund | 68 | 23.9 | 52.69% | 2026-05-31 |
| EWQ iShares MSCI France ETF | 58 | 23.9 | 57.1% | 2026-05-31 |
| FUTY Fidelity MSCI Utilities Index ETF | 63 | 24 | 52.33% | 2026-07-31 |
| ARKQ ARK Autonomous Technology & Robotics ETF | 41 | 24 | 53.95% | 2026-07-31 |
| VOLT Tema Electrification ETF | 33 | 24.2 | 50.86% | 2026-05-31 |
| USSG Xtrackers MSCI USA Selection Equity ETF | 269 | 24.2 | 48.26% | 2026-05-29 |
| INDY iShares India 50 ETF | 51 | 24.2 | 52.72% | 2026-06-30 |
| QGRW WisdomTree U.S. Quality Growth Fund | 101 | 24.4 | 54.06% | 2026-06-30 |
| IUSG iShares Core S&P U.S. Growth ETF | 394 | 24.5 | 53.52% | 2026-06-30 |
Essays that examine ARKX
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.