VANGUARD PORTFOLIO MANAGEMENT LLC
Position in CTKB — Cytek Biosciences, Inc.
CIK 2100121
MALVERN, PA
Position in CTKB
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$5,057,252
-$5,045,567 QoQ
Shares Held
1,141,592
-50.6% QoQ
Ownership
0.878%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#15
of 154 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in CTKB Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Jun 30, 2026VANGUARD PORTFOLIO MANAGEMENT LLC holds $22,082,397,032 across 74 Medical Devices names. CTKB ranks #44 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ABT |
Abbott Laboratories
|
49,017,866 | $4,447,881,160 | |
| 2 | MDT |
Medtronic plc
|
34,059,967 | $2,664,511,218 | |
| 3 | SYK |
Stryker Corp
|
8,173,167 | $2,573,239,898 | |
| 4 | EW |
Edwards Lifesciences Corp
|
26,411,402 | $2,389,175,424 | |
| 5 | DXCM |
Dexcom Inc
|
19,656,540 | $1,323,867,969 | |
| 6 | GEHC |
GE HealthCare Technologies Inc.
|
20,275,526 | $1,297,836,419 | |
| 7 | BSX |
Boston Scientific Corp
|
29,792,794 | $1,271,556,447 | |
| 8 | STE |
STERIS plc
|
5,001,950 | $1,053,260,611 |
All Filings in CTKB
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $5,057,252 | 1,141,592 | Shares | Defined | 2026-08-13 | |
| 2026-03-31 | $10,102,819 | 2,311,858 | Shares | Defined | 2026-05-08 | |
| No filing history on record for this holder in this stock. | ||||||