ARKX · ARK Space & Defense Innovation ETF ETF
$32.22
-0.13 (-0.40%)
At close · Sep 4
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.
Holders: 3
Total Value: $7,269,982
Total Shares: 213,071
Institutional Ownership Trend
25 quarters
Holder Concentration
Across 3 13F filers · Δ vs Dec 31, 2025Top Holder
81.9%
+56.9 pts
Top 5
100.0%
+25.3 pts
Top 10
100.0%
+4.7 pts
HHI
6,918
Highly concentrated+5,528
Quarterly Activity
vs Dec 31, 2025
New
2
Increased
1
Decreased
0
Sold Out
25
Unchanged
0
Holder count:
-23
Institutional value:
-49.5%
Shares held:
-57.1%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | +50,278 | 174,600 |
Top Sellers
vs Dec 31, 2025No qualifying movers this quarter.
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small CARLSON FINANCIAL, INC. | 28,721 | $979,960 | |
| Small BROWN, LISLE/CUMMINGS, INC. | 9,750 | $332,670 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Large Quadrature Capital Ltd | 89,980 | $2,607,620 | |
| Large OSAIC HOLDINGS, INC. | 58,179 | $1,686,026 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 53,600 | $1,553,328 | |
| Micro Eschler Asset Management LLP | 45,383 | $1,315,199 | |
| Mega ROYAL BANK OF CANADA | 34,742 | $1,006,822 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega CITADEL ADVISORS LLC ARKX | $4,711,972 | 64.81% | 138,100 | Call | 2026-09-02 | |
| Mega CITADEL ADVISORS LLC ARKX | $1,245,380 | 17.13% | 36,500 | Put | 2026-09-02 | |
| Small CARLSON FINANCIAL, INC. ARKX | $979,960 | 13.48% | 28,721 | Shares | 2026-08-24 | |
| Small BROWN, LISLE/CUMMINGS, INC. ARKX | $332,670 | 4.58% | 9,750 | Shares | 2026-09-02 |