What does CUSIP K08588103 represent in this 13F holders report?

CUSIP K08588103 is the security identifier for ASND - Ascendis Pharma A/S - COMM STK used to aggregate holder disclosures.

How many institutions held ASND - Ascendis Pharma A/S - COMM STK in Q1 2026?

8 institutional investors reported ASND - Ascendis Pharma A/S - COMM STK for Q1 2026. Use the holders table for investor-level position and value details.

Ascendis Pharma A/S - COMM STK (ASND)

CUSIP: K08588103

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / COMM STK
Total 13F shares: 7,936,554
Total 13F value: $1,815,328,317
Share change: +7,936,554
Put/Call ratio: 13%
SEC-reported price per share: $228.73
Number of holders: 8
Value change: +$1,815,328,317
Number of buys: 8

Security key

K08588103

Report period

Q1 2026

Institutions

Top holders

ASND full security history Ownership snapshot Full 13F holder table Ascendis Pharma A/S SEC filings Ascendis Pharma A/S company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP K08588103

Recent filing periods:

Q1 2026

Ownership snapshot

Top reported holders of ASND - Ascendis Pharma A/S - COMM STK (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

WESTFIELD CAPITAL MANAGEM...

Disclosed value leader

RA CAPITAL MANAGEMENT, L.P.

Comparable rows

15/15

Latest evidence

31 Mar 2026

13D/G 13F 3/4/5 Lead comparable stake: 8.5% 13D/G row: WESTFIELD CAPITAL MANAGEMENT CO LP Showing 1-6 of 15 holder rows.

Quick read

WESTFIELD CAPITAL MANAGEMENT CO LP leads the comparable SEC ownership view at 8.5%.

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 WESTFIELD CAPITAL MANAGEMENT CO LP's linked filing trail.

Comparable ownership Top 5

WESTFIELD CAPITAL MANAGEMENT CO LP 8.5%

FMR LLC 6.6%

JANUS HENDERSON GROUP PLC 6%

Artisan Partners Limited Partnership 5.2%

Capital International Investors 3.2%

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
WESTFIELD CAPITAL MANAGEMENT CO LP	13D/G 13F Westfield Capital Management Company, L.P. · Company 13D/G 13F	8.5%	$1,115,183,925 5,185,696 shares	-$73,663,872	31 Dec 2025
FMR LLC	13D/G 13F Company 13D/G 13F	6.6%	$957,439,699 3,852,101 shares	-$197,557,979	31 Mar 2026
JANUS HENDERSON GROUP PLC	13D/G 13F Company 13D/G 13F	6%	$924,469,795 3,719,452 shares	-$150,026,520	31 Mar 2026
Artisan Partners Limited Partnership	13D/G 13F Artisan Partners Asset Management Inc. · Company 13D/G 13F	5.2%	$687,887,717 3,225,885 shares	$0	31 Dec 2025
Capital International Investors	13F 13D/G Company 13F 13D/G	3.2% from 13D/G	$653,355,205 3,063,943 shares	—	31 Dec 2025
Jan Moller Mikkelsen	3/4/5 Director 3/4/5	0.72%	$106,545,170 453,403 shares	—	18 Mar 2026

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

7,936,554

Rows available

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 Q1 2026 Across Filers

Q1 2026 holders

Holder diff

Investor	Q1 2026 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q1 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend