On this page, we present all of the funds holding SRDX from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding SRDX, with a link to that fund's top holdings. The next columns indicate the amount of SRDX stock held by each of the funds holding SRDX, followed by the SRDX position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 119 funds holding SRDX within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by Trigran Investments Inc.. For more details on the positions held by Trigran Investments Inc. (or by any of the other funds holding SRDX), click the fund name in the "Holder" column of the funds-holding-SRDX table below.

Holder	Amount	Position Size ($ in 1000's)	As of
Trigran Investments Inc.	2,358,300	$85,724	12/31/2023
SRDX	2,358,300	$85,724	12/31/2023
Morgan Stanley	1,241,793	$45,139	12/31/2023
SRDX	1,241,793	$45,139	12/31/2023
BlackRock Inc.	1,080,288	$39,268	12/31/2023
SRDX	1,080,288	$39,268	12/31/2023
Vanguard Group Inc.	859,287	$31,235	12/31/2023
SRDX	859,287	$31,235	12/31/2023
Soleus Capital Management L.P.	771,700	$28,051	12/31/2023
SRDX	771,700	$28,051	12/31/2023
Millennium Management LLC	671,551	$24,411	12/31/2023
SRDX	671,551	$24,411	12/31/2023
Disciplined Growth Investors Inc. MN	614,891	$22,351	12/31/2023
SRDX	614,891	$22,351	12/31/2023
Renaissance Technologies LLC	584,138	$21,233	12/31/2023
SRDX	584,138	$21,233	12/31/2023
Royce & Associates LP	420,412	$15,282	12/31/2023
SRDX	420,412	$15,282	12/31/2023
Segall Bryant & Hamill LLC	404,170	$14,692	12/31/2023
SRDX	404,170	$14,692	12/31/2023
Dimensional Fund Advisors LP	375,899	$13,664	12/31/2023
SRDX	375,899	$13,664	12/31/2023
Acadian Asset Management LLC	367,162	$13,340	12/31/2023
SRDX	367,162	$13,340	12/31/2023
Geode Capital Management LLC	299,269	$10,880	12/31/2023
SRDX	299,269	$10,880	12/31/2023
State Street Corp	293,314	$10,662	12/31/2023
SRDX	293,314	$10,662	12/31/2023
Bank of America Corp DE	251,154	$9,129	12/31/2023
SRDX	251,154	$9,129	12/31/2023
Kennedy Capital Management Inc.	139,347	$5,065	12/31/2023
SRDX	139,347	$5,065	12/31/2023
Northern Trust Corp	137,224	$4,988	12/31/2023
SRDX	137,224	$4,988	12/31/2023
Jacobs Levy Equity Management Inc.	127,965	$4,652	12/31/2023
SRDX	127,965	$4,652	12/31/2023
Deutsche Bank AG	119,132	$4,330	12/31/2023
SRDX	119,132	$4,330	12/31/2023
Charles Schwab Investment Management Inc.	110,493	$4,016	12/31/2023
SRDX	110,493	$4,016	12/31/2023
Salem Investment Counselors Inc.	121,000	$3,550	03/31/2024
SRDX	121,000	$3,550	03/31/2024
Nuveen Asset Management LLC	88,879	$3,231	12/31/2023
SRDX	88,879	$3,231	12/31/2023
Granite Investment Partners LLC	73,265	$2,663	12/31/2023
SRDX	73,265	$2,663	12/31/2023
Gamco Investors INC. ET AL	72,300	$2,628	12/31/2023
SRDX	72,300	$2,628	12/31/2023
Russell Investments Group Ltd.	67,845	$2,466	12/31/2023
SRDX	67,845	$2,466	12/31/2023
Susquehanna International Group LLP	63,455	$2,307	12/31/2023
SRDX	63,455	$2,307	12/31/2023
Royal Bank of Canada	60,931	$2,215	12/31/2023
SRDX	60,931	$2,215	12/31/2023
Rice Hall James & Associates LLC	69,582	$2,042	03/31/2024
SRDX	69,582	$2,042	03/31/2024
Sei Investments Co.	55,441	$2,015	12/31/2023
SRDX	55,441	$2,015	12/31/2023
Bank of New York Mellon Corp	53,946	$1,961	12/31/2023
SRDX	53,946	$1,961	12/31/2023
Gabelli Funds LLC	52,700	$1,916	12/31/2023
SRDX	52,700	$1,916	12/31/2023
Marshall Wace LLP	52,554	$1,910	12/31/2023
SRDX	52,554	$1,910	12/31/2023
Ameriprise Financial Inc.	50,805	$1,847	12/31/2023
SRDX	50,805	$1,847	12/31/2023
D. E. Shaw & Co. Inc.	50,298	$1,828	12/31/2023
SRDX	50,298	$1,828	12/31/2023
Goldman Sachs Group Inc.	50,199	$1,825	12/31/2023
SRDX	50,199	$1,825	12/31/2023
Panagora Asset Management Inc.	44,664	$1,624	12/31/2023
SRDX	44,664	$1,624	12/31/2023
White Pine Capital LLC	41,343	$1,503	12/31/2023
SRDX	41,343	$1,503	12/31/2023
Two Sigma Advisers LP	38,630	$1,404	12/31/2023
SRDX	38,630	$1,404	12/31/2023
FMR LLC	35,107	$1,276	12/31/2023
SRDX	35,107	$1,276	12/31/2023
Teton Advisors Inc.	33,500	$1,218	12/31/2023
SRDX	33,500	$1,218	12/31/2023
Norges Bank	31,600	$1,149	12/31/2023
SRDX	31,600	$1,149	12/31/2023
HRT Financial LP	30,650	$1,114	12/31/2023
SRDX	30,650	$1,114	12/31/2023
Arrowstreet Capital Limited Partnership	29,316	$1,066	12/31/2023
SRDX	29,316	$1,066	12/31/2023
Los Angeles Capital Management & Equity Research Inc.	35,204	$1,033	03/31/2024
SRDX	35,204	$1,033	03/31/2024
AQR Capital Management LLC	25,881	$941	12/31/2023
SRDX	25,881	$941	12/31/2023
Trexquant Investment LP	23,047	$838	12/31/2023
SRDX	23,047	$838	12/31/2023
Citadel Advisors LLC		$804	12/31/2023
SRDX	25,608	$931	12/31/2023
Put	3,600	$131	12/31/2023
Call	100	$4	12/31/2023
Assenagon Asset Management S.A.	24,324	$714	03/31/2024
SRDX	24,324	$714	03/31/2024
Barclays PLC	18,909	$687	12/31/2023
SRDX	18,909	$687	12/31/2023
Rhumbline Advisers	17,823	$648	12/31/2023
SRDX	17,823	$648	12/31/2023
Cetera Advisor Networks LLC	16,925	$615	12/31/2023
SRDX	16,925	$615	12/31/2023
Sit Investment Associates Inc.	16,624	$604	12/31/2023
SRDX	16,624	$604	12/31/2023
US Bancorp DE	16,190	$589	12/31/2023
SRDX	16,190	$589	12/31/2023
State of Wisconsin Investment Board	16,200	$589	12/31/2023
SRDX	16,200	$589	12/31/2023
Engineers Gate Manager LP	16,140	$587	12/31/2023
SRDX	16,140	$587	12/31/2023
Tudor Investment Corp Et Al	15,789	$574	12/31/2023
SRDX	15,789	$574	12/31/2023
Alliancebernstein L.P.	15,721	$571	12/31/2023
SRDX	15,721	$571	12/31/2023
UBS Group AG	14,916	$542	12/31/2023
SRDX	14,916	$542	12/31/2023
JPMorgan Chase & Co.	14,320	$521	12/31/2023
SRDX	14,320	$521	12/31/2023
Quadrature Capital Ltd	13,856	$504	12/31/2023
SRDX	13,856	$504	12/31/2023
Invesco Ltd.	13,743	$500	12/31/2023
SRDX	13,743	$500	12/31/2023
Two Sigma Investments LP	12,169	$442	12/31/2023
SRDX	12,169	$442	12/31/2023
Putnam Investments LLC	10,628	$386	12/31/2023
SRDX	10,628	$386	12/31/2023
ExodusPoint Capital Management LP	10,410	$378	12/31/2023
SRDX	10,410	$378	12/31/2023
Mairs & Power Inc.	10,000	$364	12/31/2023
SRDX	10,000	$364	12/31/2023
RBF Capital LLC	10,000	$364	12/31/2023
SRDX	10,000	$364	12/31/2023
Summit Global Investments	9,893	$360	12/31/2023
SRDX	9,893	$360	12/31/2023
Cubist Systematic Strategies LLC	9,841	$358	12/31/2023
SRDX	9,841	$358	12/31/2023
Qube Research & Technologies Ltd	9,078	$330	12/31/2023
SRDX	9,078	$330	12/31/2023
Bank of Montreal Can	8,144	$309	12/31/2023
SRDX	8,144	$309	12/31/2023
Moody National Bank Trust Division	10,341	$303	03/31/2024
SRDX	10,341	$303	03/31/2024
MetLife Investment Management LLC	7,505	$273	12/31/2023
SRDX	7,505	$273	12/31/2023
XTX Topco Ltd	7,273	$264	12/31/2023
SRDX	7,273	$264	12/31/2023
Franklin Resources Inc.	7,174	$261	12/31/2023
SRDX	7,174	$261	12/31/2023
Strs Ohio	7,100	$258	12/31/2023
SRDX	7,100	$258	12/31/2023
American International Group Inc.	6,845	$249	12/31/2023
SRDX	6,845	$249	12/31/2023
BNP Paribas Arbitrage SA	6,397	$233	12/31/2023
SRDX	6,397	$233	12/31/2023
Jump Financial LLC	6,392	$232	12/31/2023
SRDX	6,392	$232	12/31/2023
Mesirow Financial Investment Management Inc.	7,614	$223	03/31/2024
SRDX	7,614	$223	03/31/2024
Centiva Capital LP	5,884	$214	12/31/2023
SRDX	5,884	$214	12/31/2023
New York State Common Retirement Fund	5,722	$208	12/31/2023
SRDX	5,722	$208	12/31/2023
Voya Investment Management LLC	5,610	$204	12/31/2023
SRDX	5,610	$204	12/31/2023
The Manufacturers Life Insurance Company	5,510	$200	12/31/2023
SRDX	5,510	$200	12/31/2023
Lazard Asset Management LLC	5,006	$181	12/31/2023
SRDX	5,006	$181	12/31/2023
Financial Perspectives Inc	6,014	$176	03/31/2024
SRDX	6,014	$176	03/31/2024
Hillsdale Investment Management Inc.	4,570	$166	12/31/2023
SRDX	4,570	$166	12/31/2023
SG Americas Securities LLC	4,478	$163	12/31/2023
SRDX	4,478	$163	12/31/2023
State of Tennessee Treasury Department	4,324	$157	12/31/2023
SRDX	4,324	$157	12/31/2023
Wells Fargo & Company MN	3,572	$130	12/31/2023
SRDX	3,572	$130	12/31/2023
California State Teachers Retirement System	2,267	$82	12/31/2023
SRDX	2,267	$82	12/31/2023
Public Employees Retirement Association of Colorado	2,138	$78	12/31/2023
SRDX	2,138	$78	12/31/2023
Citigroup Inc.	1,972	$72	12/31/2023
SRDX	1,972	$72	12/31/2023
Quantbot Technologies LP	1,723	$63	12/31/2023
SRDX	1,723	$63	12/31/2023
Legal & General Group Plc	1,491	$54	12/31/2023
SRDX	1,491	$54	12/31/2023
Ameritas Investment Partners Inc.	1,426	$52	12/31/2023
SRDX	1,426	$52	12/31/2023
Nisa Investment Advisors LLC	1,410	$51	12/31/2023
SRDX	1,410	$51	12/31/2023
State of Wyoming	1,213	$44	12/31/2023
SRDX	1,213	$44	12/31/2023
Tower Research Capital LLC TRC	980	$36	12/31/2023
SRDX	980	$36	12/31/2023
GWM Advisors LLC	849	$31	12/31/2023
SRDX	849	$31	12/31/2023
Metropolitan Life Insurance Co NY	777	$28	12/31/2023
SRDX	777	$28	12/31/2023
Manchester Capital Management LLC	775	$28	12/31/2023
SRDX	775	$28	12/31/2023
EntryPoint Capital LLC	698	$25	12/31/2023
SRDX	698	$25	12/31/2023
Nelson Van Denburg & Campbell Wealth Management Group LLC	542	$20	12/31/2023
SRDX	542	$20	12/31/2023
CWM LLC	503	$15	03/31/2024
SRDX	503	$15	03/31/2024
Amalgamated Bank	465	$14	03/31/2024
SRDX	465	$14	03/31/2024
Advisor Group Holdings Inc.	324	$12	12/31/2023
SRDX	324	$12	12/31/2023
Point72 Asia Singapore Pte. Ltd.	286	$10	12/31/2023
SRDX	286	$10	12/31/2023
JFS Wealth Advisors LLC	225	$8	12/31/2023
SRDX	225	$8	12/31/2023
New England Capital Financial Advisors LLC	100	$4	12/31/2023
SRDX	100	$4	12/31/2023
Northwestern Mutual Wealth Management Co.	91	$3	12/31/2023
SRDX	91	$3	12/31/2023
Lindbrook Capital LLC	44	$2	12/31/2023
SRDX	44	$2	12/31/2023
Prestige Wealth Management Group LLC	53	$2	12/31/2023
SRDX	53	$2	12/31/2023
GAMMA Investing LLC	20	$1	03/31/2024
SRDX	20	$1	03/31/2024
The PNC Financial Services Group Inc.	39	$1	12/31/2023
SRDX	39	$1	12/31/2023
O Dell Group LLC	20	$1	12/31/2023
SRDX	20	$1	12/31/2023
Quest Partners LLC	25	$1	12/31/2023
SRDX	25	$1	12/31/2023
Sachetta LLC	20	$1	12/31/2023
SRDX	20	$1	12/31/2023
Farmers & Merchants Investments Inc.	9	$0	03/31/2024
SRDX	9	$0	03/31/2024
Versant Capital Management Inc	6	$0	03/31/2024
SRDX	6	$0	03/31/2024
Proequities Inc.	0	$0	12/31/2023
Put	0	$0	12/31/2023
Call	0	$0	12/31/2023
SRDX	0	$0	12/31/2023