QUIDEL CORP - COMMON STOCK (QDEL)

CUSIP: 74838J101

Q1 2026 13F Holders as of 31 Mar 2026

Share change
+10,000
SEC-reported price per share
$58.22
Number of holders
2
Value change
+$164,300
Number of buys
1

Security key

74838J101

Report period

Q1 2026

Institutions

2

Top holders

2

Ownership snapshot

Top reported holders of QDEL - QUIDEL CORP - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BlackRock, Inc.
Disclosed value leader
T. Rowe Price Investment ...
Comparable rows
15/15
Latest evidence
31 Mar 2026
13F 13D/G 3/4/5 Lead comparable stake: 15% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 15%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 15%
VANGUARD PORTFOLIO MANAGEMENT LLC 6%
Rubric Capital Management LP 5.6%
VANGUARD CAPITAL MANAGEMENT LLC 5.2%
Joseph M. Busky 0.08%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13F 13D/G
Company
15%
from 13D/G
$295,359,466
10,341,718 shares
31 Dec 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
13D/G
Vanguard Portfolio Management
6%
$67,168,600
4,088,168 shares
$0 31 Mar 2026
Rubric Capital Management LP
13D/G 13F
Company
5.6%
$126,043,729
3,777,157 shares
-$28,717,588 31 Dec 2025
VANGUARD CAPITAL MANAGEMENT LLC
13D/G
Vanguard Capital Management
5.2%
$58,697,210
3,572,563 shares
$0 31 Mar 2026
Joseph M. Busky
3/4/5
Chief Financial Officer
0.08%
$1,745,717
55,108 shares
mixed-class rows
+$204,047 28 Mar 2026
T. Rowe Price Investment Management, Inc.
13F
Company
13F
18%
$337,925,000
11,832,098 shares
31 Dec 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
2
Shares
82,549
Rows available
2
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders
2
Q1 2026 holders
2
Holder diff
0
Investor Q4 2025 Shares Q1 2026 Shares Share Diff Share Chg % Q4 2025 value Q1 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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