Position in QSI
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$5,324,267
-$2,399,461 QoQ
Shares Held
6,878,899
-2.0% QoQ
Ownership
3.16%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
20 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in QSI Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026ARK Investment Management LLC holds $127,507,465 across 8 Medical Devices names. QSI ranks #5 (4.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PACB |
Pacific Biosciences Of California, Inc.
|
36,273,288 | $47,880,740 | |
| 2 | CERS |
Cerus Corp
|
19,161,148 | $34,873,289 | |
| 3 | BFLY |
Butterfly Network, Inc.
|
5,227,503 | $21,119,112 | |
| 4 | MASS |
908 Devices Inc.
|
1,946,685 | $11,913,712 | |
| 5 | QSI |
Quantum-Si Inc
This page
|
6,878,899 | $5,324,267 | |
| 6 | BWAY |
Brainsway Ltd.
|
193,686 | $2,574,086 | |
| 7 | INMD |
InMode Ltd.
|
157,726 | $2,157,691 | |
| 8 | NNOX |
Nano-X Imaging Ltd.
|
733,290 | $1,664,568 |
All Filings in QSI
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $5,324,267 | 6,878,899 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $7,723,728 | 7,021,571 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $10,749,899 | 7,624,042 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $15,603,042 | 7,960,736 | Shares | Sole | 2025-07-30 | |
| 2025-03-31 | $10,456,201 | 8,713,501 | Shares | Sole | 2025-05-07 | |
| 2024-12-31 | $23,891,355 | 8,848,650 | Shares | Sole | 2025-02-04 | |
| 2024-09-30 | $10,445,181 | 11,842,609 | Shares | Sole | 2024-10-31 | |
| 2024-06-30 | $13,030,425 | 12,409,929 | Shares | Sole | 2024-07-26 | |
| 2024-03-31 | $25,154,685 | 12,768,876 | Shares | Sole | 2024-04-18 | |
| 2023-12-31 | $31,193,837 | 15,519,322 | Shares | Sole | 2024-01-17 | |
| 2023-09-30 | $23,984,040 | 14,448,217 | Shares | Sole | 2023-10-18 | |
| 2023-06-30 | $22,830,610 | 12,754,531 | Shares | Sole | 2023-07-10 | |
| 2023-03-31 | $20,589,872 | 11,698,791 | Shares | Sole | 2023-04-17 | |
| 2022-12-31 | $21,696,816 | 11,856,184 | Shares | Sole | 2023-01-24 | |
| 2022-09-30 | $36,403,922 | 13,237,790 | Shares | Sole | 2022-10-17 | |
| 2022-06-30 | $32,176,274 | 13,869,084 | Shares | Sole | 2022-07-11 | |
| 2022-03-31 | $62,588,246 | 13,373,557 | Shares | Sole | 2022-04-19 | |
| 2021-12-31 | $102,838,470 | 13,067,150 | Shares | Sole | 2022-01-28 | |
| 2021-09-30 | $105,904,497 | 12,698,381 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $49,632,194 | 4,048,303 | Shares | Sole | 2021-08-05 | |
| No filing history on record for this holder in this stock. | ||||||