There is a long list of 62 institutional holders of STXS within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of STXS by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-STXS table below, the initial column indicates the name of each top institutional holder of STXS, with a link to that fund's top holdings. The next columns indicate the amount of STXS stock held by each of the institutional holders of STXS, followed by the STXS position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
DAFNA Capital Management LLC	13,680,554	$23,941	12/31/2023
STXS	13,680,554	$23,941	12/31/2023
Redmile Group LLC	3,402,443	$5,954	12/31/2023
STXS	3,402,443	$5,954	12/31/2023
Lagoda Investment Management L.P.	3,233,935	$5,659	12/31/2023
STXS	3,233,935	$5,659	12/31/2023
Archon Capital Management LLC	2,978,275	$5,212	12/31/2023
STXS	2,978,275	$5,212	12/31/2023
Arbiter Partners Capital Management LLC	2,755,693	$4,822	12/31/2023
STXS	2,755,693	$4,822	12/31/2023
Vanguard Group Inc.	2,426,529	$4,246	12/31/2023
STXS	2,426,529	$4,246	12/31/2023
Essex Investment Management Co. LLC	1,175,678	$2,057	12/31/2023
STXS	1,175,678	$2,057	12/31/2023
BlackRock Inc.	1,073,093	$1,878	12/31/2023
STXS	1,073,093	$1,878	12/31/2023
Prescott Group Capital Management L.L.C.	823,652	$1,441	12/31/2023
STXS	823,652	$1,441	12/31/2023
Legato Capital Management LLC	472,150	$1,232	03/31/2024
STXS	472,150	$1,232	03/31/2024
Geode Capital Management LLC	609,359	$1,067	12/31/2023
STXS	609,359	$1,067	12/31/2023
AlphaCentric Advisors LLC	600,000	$1,050	12/31/2023
STXS	600,000	$1,050	12/31/2023
Kovack Advisors Inc.	223,183	$583	03/31/2024
STXS	223,183	$583	03/31/2024
Renaissance Technologies LLC	311,600	$545	12/31/2023
STXS	311,600	$545	12/31/2023
Bridgeway Capital Management Inc.	249,700	$437	12/31/2023
STXS	249,700	$437	12/31/2023
State of Wyoming	243,376	$426	12/31/2023
STXS	243,376	$426	12/31/2023
Verition Fund Management LLC	240,124	$420	12/31/2023
STXS	240,124	$420	12/31/2023
State Street Corp	194,689	$341	12/31/2023
STXS	194,689	$341	12/31/2023
Citigroup Inc.	193,828	$339	12/31/2023
STXS	193,828	$339	12/31/2023
Independent Advisor Alliance	169,805	$297	12/31/2023
STXS	169,805	$297	12/31/2023
Jane Street Group LLC	159,398	$279	12/31/2023
STXS	159,398	$279	12/31/2023
683 Capital Management LLC	157,719	$276	12/31/2023
STXS	157,719	$276	12/31/2023
Royal Bank of Canada	155,640	$272	12/31/2023
STXS	155,640	$272	12/31/2023
Qube Research & Technologies Ltd	144,714	$253	12/31/2023
STXS	144,714	$253	12/31/2023
Northern Trust Corp	139,648	$244	12/31/2023
STXS	139,648	$244	12/31/2023
Dimensional Fund Advisors LP	131,359	$230	12/31/2023
STXS	131,359	$230	12/31/2023
Citadel Advisors LLC		$220	12/31/2023
STXS	123,023	$215	12/31/2023
Call	5,900	$10	12/31/2023
Put	2,800	$5	12/31/2023
Susquehanna International Group LLP		$204	12/31/2023
STXS	130,619	$229	12/31/2023
Put	14,500	$25	12/31/2023
Bank of America Corp DE	112,527	$197	12/31/2023
STXS	112,527	$197	12/31/2023
Bank of New York Mellon Corp	75,668	$132	12/31/2023
STXS	75,668	$132	12/31/2023
Millennium Management LLC	72,606	$127	12/31/2023
STXS	72,606	$127	12/31/2023
Polar Capital Holdings Plc	69,727	$122	12/31/2023
STXS	69,727	$122	12/31/2023
Wealth Effects LLC	69,560	$122	12/31/2023
STXS	69,560	$122	12/31/2023
ExodusPoint Capital Management LP	62,818	$110	12/31/2023
STXS	62,818	$110	12/31/2023
Price T Rowe Associates Inc. MD	58,400	$103	12/31/2023
STXS	58,400	$103	12/31/2023
Morgan Stanley	58,162	$102	12/31/2023
STXS	58,162	$102	12/31/2023
GSG Advisors LLC	26,500	$69	03/31/2024
STXS	26,500	$69	03/31/2024
LPL Financial LLC	38,323	$67	12/31/2023
STXS	38,323	$67	12/31/2023
Wellington Shields & Co. LLC	37,193	$65	12/31/2023
STXS	37,193	$65	12/31/2023
Investors Research Corp	35,950	$63	12/31/2023
STXS	35,950	$63	12/31/2023
Boothbay Fund Management LLC	34,005	$60	12/31/2023
STXS	34,005	$60	12/31/2023
Y Intercept Hong Kong Ltd	32,537	$57	12/31/2023
STXS	32,537	$57	12/31/2023
Cherry Creek Investment Advisors Inc.	29,802	$52	12/31/2023
STXS	29,802	$52	12/31/2023
Charles Schwab Investment Management Inc.	22,696	$40	12/31/2023
STXS	22,696	$40	12/31/2023
Group One Trading L.P.		$40	12/31/2023
Call	22,900	$40	12/31/2023
JPMorgan Chase & Co.	22,154	$39	12/31/2023
STXS	22,154	$39	12/31/2023
Virtu Financial LLC	20,951	$37	12/31/2023
STXS	20,951	$37	12/31/2023
The PNC Financial Services Group Inc.	18,000	$32	12/31/2023
STXS	18,000	$32	12/31/2023
Raymond James Financial Services Advisors Inc.	16,887	$30	12/31/2023
STXS	16,887	$30	12/31/2023
Summit Asset Management LLC	15,500	$27	12/31/2023
STXS	15,500	$27	12/31/2023