On this page, we present all of the funds holding PTCT from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding PTCT, with a link to that fund's top holdings. The next columns indicate the amount of PTCT stock held by each of the funds holding PTCT, followed by the PTCT position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 189 funds holding PTCT within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by Steelhead Partners LLC. For more details on the positions held by Steelhead Partners LLC (or by any of the other funds holding PTCT), click the fund name in the "Holder" column of the funds-holding-PTCT table below.

Holder	Amount	Position Size ($ in 1000's)	As of
Steelhead Partners LLC		$42,758,282	12/31/2023
NOTE 1	46,300,000	$42,758,282	12/31/2023
Wellington Management Group LLP	9,816,603	$270,546	12/31/2023
PTCT	9,816,603	$270,546	12/31/2023
Vanguard Group Inc.	8,800,843	$242,551	12/31/2023
PTCT	8,800,843	$242,551	12/31/2023
BlackRock Inc.		$212,064	12/31/2023
PTCT	7,634,122	$210,396	12/31/2023
NOTE 1	1,825,000	$1,668	12/31/2023
RTW Investments LP	7,423,970	$204,605	12/31/2023
PTCT	7,423,970	$204,605	12/31/2023
Armistice Capital LLC	6,864,000	$189,172	12/31/2023
PTCT	6,864,000	$189,172	12/31/2023
State Street Corp	4,633,955	$127,712	12/31/2023
PTCT	4,633,955	$127,712	12/31/2023
Camber Capital Management LP	4,000,000	$110,240	12/31/2023
PTCT	4,000,000	$110,240	12/31/2023
Cowen AND Company LLC	3,725,626	$108,378	03/31/2024
PTCT	3,725,626	$108,378	03/31/2024
Franklin Resources Inc.		$97,195	12/31/2023
NOTE 1	63,000,000	$57,884	12/31/2023
PTCT	1,426,378	$39,311	12/31/2023
Janus Henderson Group PLC	2,612,593	$72,004	12/31/2023
PTCT	2,612,593	$72,004	12/31/2023
D. E. Shaw & Co. Inc.		$66,996	12/31/2023
PTCT	1,346,967	$37,122	12/31/2023
NOTE	32,500,000	$29,874	12/31/2023
FMR LLC	1,814,421	$50,005	12/31/2023
PTCT	1,814,421	$50,005	12/31/2023
Geode Capital Management LLC	1,611,225	$44,410	12/31/2023
PTCT	1,611,225	$44,410	12/31/2023
Jacobs Levy Equity Management Inc.	1,323,419	$36,473	12/31/2023
PTCT	1,323,419	$36,473	12/31/2023
Morgan Stanley	1,246,259	$34,347	12/31/2023
PTCT	1,246,259	$34,347	12/31/2023
Blackstone Group Inc	1,095,290	$30,186	12/31/2023
PTCT	1,095,290	$30,186	12/31/2023
Wolverine Asset Management LLC		$28,252	12/31/2023
NOTE 1	31,870,000	$29,244	12/31/2023
Put	36,000	$992	12/31/2023
DeepCurrents Investment Group LLC		$27,852	12/31/2023
NOTE 1	30,151,000	$27,852	12/31/2023
Price T Rowe Associates Inc. MD	998,303	$27,514	12/31/2023
PTCT	998,303	$27,514	12/31/2023
Tang Capital Management LLC	900,000	$24,804	12/31/2023
PTCT	900,000	$24,804	12/31/2023
Adage Capital Partners GP L.L.C.	892,238	$24,590	12/31/2023
PTCT	892,238	$24,590	12/31/2023
Pictet Asset Management Holding SA	866,560	$23,882	12/31/2023
PTCT	866,560	$23,882	12/31/2023
Jane Street Group LLC		$23,240	12/31/2023
PTCT	817,858	$22,540	12/31/2023
Call	25,400	$700	12/31/2023
Voloridge Investment Management LLC	819,746	$22,592	12/31/2023
PTCT	819,746	$22,592	12/31/2023
Linden Advisors LP		$19,579	12/31/2023
SDBCV	21,274,000	$19,579	12/31/2023
JPMorgan Chase & Co.	699,052	$19,266	12/31/2023
PTCT	699,052	$19,266	12/31/2023
Northern Trust Corp	688,847	$18,985	12/31/2023
PTCT	688,847	$18,985	12/31/2023
Renaissance Technologies LLC	622,900	$17,167	12/31/2023
PTCT	622,900	$17,167	12/31/2023
Charles Schwab Investment Management Inc.	610,918	$16,837	12/31/2023
PTCT	610,918	$16,837	12/31/2023
Whitebox Advisors LLC		$15,992	12/31/2023
NOTE 1	17,500,000	$15,992	12/31/2023
Norges Bank	546,375	$15,058	12/31/2023
PTCT	546,375	$15,058	12/31/2023
Goldman Sachs Group Inc.	526,494	$14,510	12/31/2023
PTCT	526,494	$14,510	12/31/2023
Millennium Management LLC	510,576	$14,071	12/31/2023
PTCT	510,576	$14,071	12/31/2023
Rockefeller Capital Management L.P.	501,242	$13,814	12/31/2023
PTCT	501,242	$13,814	12/31/2023
Ameriprise Financial Inc.		$12,535	12/31/2023
CONV BND	11,500,000	$10,509	12/31/2023
PTCT	73,498	$2,026	12/31/2023
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	404,192	$11,139	12/31/2023
PTCT	404,192	$11,139	12/31/2023
Alliancebernstein L.P.	353,551	$9,744	12/31/2023
PTCT	353,551	$9,744	12/31/2023
Verition Fund Management LLC		$9,408	12/31/2023
NOTE 1	9,503	$8,731	12/31/2023
PTCT	24,560	$677	12/31/2023
Rafferty Asset Management LLC	339,963	$9,369	12/31/2023
PTCT	339,963	$9,369	12/31/2023
Assenagon Asset Management S.A.	306,231	$8,908	03/31/2024
PTCT	306,231	$8,908	03/31/2024
Invesco Ltd.	313,177	$8,631	12/31/2023
PTCT	313,177	$8,631	12/31/2023
Citadel Advisors LLC		$8,363	12/31/2023
PTCT	290,918	$8,018	12/31/2023
Call	20,600	$568	12/31/2023
Put	8,100	$223	12/31/2023
Panagora Asset Management Inc.	302,955	$8,349	12/31/2023
PTCT	302,955	$8,349	12/31/2023
Nuveen Asset Management LLC	292,401	$8,059	12/31/2023
PTCT	292,401	$8,059	12/31/2023
Jefferies Financial Group Inc.		$8,000	12/31/2023
PTCT	276,895	$7,631	12/31/2023
Call	13,400	$369	12/31/2023
UBS Group AG	288,748	$7,958	12/31/2023
PTCT	288,748	$7,958	12/31/2023
Bank of America Corp DE	265,939	$7,329	12/31/2023
PTCT	265,939	$7,329	12/31/2023
Barclays PLC	253,302	$6,981	12/31/2023
PTCT	253,302	$6,981	12/31/2023
Bank of New York Mellon Corp	238,209	$6,930	03/31/2024
PTCT	238,209	$6,930	03/31/2024
Trexquant Investment LP	232,663	$6,412	12/31/2023
PTCT	232,663	$6,412	12/31/2023
Woodline Partners LP	226,942	$6,255	12/31/2023
PTCT	226,942	$6,255	12/31/2023
Cubist Systematic Strategies LLC	216,408	$5,964	12/31/2023
PTCT	216,408	$5,964	12/31/2023
Citigroup Inc.	214,983	$5,925	12/31/2023
PTCT	214,983	$5,925	12/31/2023
BNP Paribas Arbitrage SA	199,670	$5,808	03/31/2024
PTCT	199,670	$5,808	03/31/2024
Russell Investments Group Ltd.	191,120	$5,267	12/31/2023
PTCT	191,120	$5,267	12/31/2023
Two Sigma Advisers LP	189,842	$5,232	12/31/2023
PTCT	189,842	$5,232	12/31/2023
Candriam Luxembourg S.C.A.	167,048	$4,859	03/31/2024
PTCT	167,048	$4,859	03/31/2024
PDT Partners LLC	175,507	$4,837	12/31/2023
PTCT	175,507	$4,837	12/31/2023
Pinnacle Associates Ltd.	156,938	$4,565	03/31/2024
PTCT	156,938	$4,565	03/31/2024
Sphera Funds Management LTD.	136,525	$3,763	12/31/2023
PTCT	136,525	$3,763	12/31/2023
Swiss National Bank	133,565	$3,681	12/31/2023
PTCT	133,565	$3,681	12/31/2023
Rhumbline Advisers	106,186	$2,926	12/31/2023
PTCT	106,186	$2,926	12/31/2023
State of New Jersey Common Pension Fund D	99,754	$2,902	03/31/2024
PTCT	99,754	$2,902	03/31/2024
Caption Management LLC		$2,761	12/31/2023
Call	160,200	$4,415	12/31/2023
Put	60,000	$1,654	12/31/2023
Fisher Asset Management LLC	95,778	$2,640	12/31/2023
PTCT	95,778	$2,640	12/31/2023
Legal & General Group Plc	88,347	$2,435	12/31/2023
PTCT	88,347	$2,435	12/31/2023
Credit Suisse AG	83,635	$2,305	12/31/2023
PTCT	83,635	$2,305	12/31/2023
Susquehanna Portfolio Strategies LLC	80,475	$2,218	12/31/2023
PTCT	80,475	$2,218	12/31/2023
UBS Asset Management Americas Inc.	79,097	$2,180	12/31/2023
PTCT	79,097	$2,180	12/31/2023
Point72 Asset Management L.P.	78,100	$2,152	12/31/2023
PTCT	78,100	$2,152	12/31/2023
State of Wisconsin Investment Board	77,731	$2,142	12/31/2023
PTCT	77,731	$2,142	12/31/2023
California State Teachers Retirement System	72,285	$1,992	12/31/2023
PTCT	72,285	$1,992	12/31/2023
Engineers Gate Manager LP	69,515	$1,916	12/31/2023
PTCT	69,515	$1,916	12/31/2023
Twinbeech Capital LP	67,679	$1,865	12/31/2023
PTCT	67,679	$1,865	12/31/2023
The Manufacturers Life Insurance Company	65,654	$1,809	12/31/2023
PTCT	65,654	$1,809	12/31/2023
Knights of Columbus Asset Advisors LLC	59,424	$1,638	12/31/2023
PTCT	59,424	$1,638	12/31/2023
New York State Common Retirement Fund	56,983	$1,570	12/31/2023
PTCT	56,983	$1,570	12/31/2023
Profund Advisors LLC	55,378	$1,526	12/31/2023
PTCT	55,378	$1,526	12/31/2023
Tudor Investment Corp Et Al	49,555	$1,366	12/31/2023
PTCT	49,555	$1,366	12/31/2023
TD Asset Management Inc.	46,874	$1,292	12/31/2023
PTCT	46,874	$1,292	12/31/2023
Duality Advisers LP	46,598	$1,284	12/31/2023
PTCT	46,598	$1,284	12/31/2023
Susquehanna International Group LLP		$1,264	12/31/2023
Call	36,600	$1,009	12/31/2023
PTCT	24,466	$674	12/31/2023
Put	15,200	$419	12/31/2023
Parallax Volatility Advisers L.P.		$1,240	12/31/2023
Call	45,000	$1,240	12/31/2023
Putnam Investments LLC	44,809	$1,235	12/31/2023
PTCT	44,809	$1,235	12/31/2023
Mirae Asset Global Investments Co. Ltd.	41,691	$1,213	03/31/2024
PTCT	41,691	$1,213	03/31/2024
UBS Oconnor LLC		$1,113	12/31/2023
PTCT	36,052	$994	12/31/2023
Call	50,000	$119	12/31/2023
Harbor Capital Advisors Inc.	38,383	$1,058	12/31/2023
PTCT	38,383	$1,058	12/31/2023
Deutsche Bank AG	37,221	$1,026	12/31/2023
PTCT	37,221	$1,026	12/31/2023
MetLife Investment Management LLC	37,180	$1,025	12/31/2023
PTCT	37,180	$1,025	12/31/2023
Algert Global LLC	36,000	$992	12/31/2023
PTCT	36,000	$992	12/31/2023
Skandinaviska Enskilda Banken AB publ	35,945	$991	12/31/2023
PTCT	35,945	$991	12/31/2023
Edgestream Partners L.P.	35,841	$988	12/31/2023
PTCT	35,841	$988	12/31/2023
American International Group Inc.	35,815	$987	12/31/2023
PTCT	35,815	$987	12/31/2023
Thrivent Financial for Lutherans	33,852	$933	12/31/2023
PTCT	33,852	$933	12/31/2023
Guggenheim Capital LLC	31,619	$871	12/31/2023
PTCT	31,619	$871	12/31/2023
Hudson Bay Capital Management LP	30,000	$827	12/31/2023
PTCT	30,000	$827	12/31/2023
Public Employees Retirement System of Ohio	29,846	$823	12/31/2023
PTCT	29,846	$823	12/31/2023
Ensign Peak Advisors Inc	29,140	$803	12/31/2023
PTCT	29,140	$803	12/31/2023
Great West Life Assurance Co. Can	29,177	$799	12/31/2023
PTCT	29,177	$799	12/31/2023
AQR Capital Management LLC	28,823	$794	12/31/2023
PTCT	28,823	$794	12/31/2023
Voya Investment Management LLC	28,687	$791	12/31/2023
PTCT	28,687	$791	12/31/2023
Corton Capital Inc.	27,914	$769	12/31/2023
PTCT	27,914	$769	12/31/2023
Readystate Asset Management LP		$726	12/31/2023
NOTE 1	8,227	$726	12/31/2023
Jump Financial LLC	26,256	$724	12/31/2023
PTCT	26,256	$724	12/31/2023
George Kaiser Family Foundation	24,380	$709	03/31/2024
PTCT	24,380	$709	03/31/2024
American Century Companies Inc.	25,708	$709	12/31/2023
PTCT	25,708	$709	12/31/2023
Wells Fargo & Company MN	25,412	$700	12/31/2023
PTCT	25,412	$700	12/31/2023
DekaBank Deutsche Girozentrale	24,000	$695	03/31/2024
PTCT	24,000	$695	03/31/2024
Rathbone Brothers plc	23,735	$654	12/31/2023
PTCT	23,735	$654	12/31/2023
Seven Eight Capital LP	23,637	$651	12/31/2023
PTCT	23,637	$651	12/31/2023
Royal Bank of Canada	21,662	$597	12/31/2023
PTCT	21,662	$597	12/31/2023
Aquatic Capital Management LLC	21,200	$584	12/31/2023
PTCT	21,200	$584	12/31/2023
State Board of Administration of Florida Retirement System	20,211	$557	12/31/2023
PTCT	20,211	$557	12/31/2023
Kornitzer Capital Management Inc. KS		$556	03/31/2024
CONV	600,000	$556	03/31/2024
Arizona State Retirement System	18,956	$522	12/31/2023
PTCT	18,956	$522	12/31/2023
Principal Financial Group Inc.	17,764	$517	03/31/2024
PTCT	17,764	$517	03/31/2024
Apollon Wealth Management LLC	17,678	$514	03/31/2024
PTCT	17,678	$514	03/31/2024
E Fund Management Co. Ltd.	18,188	$501	12/31/2023
PTCT	18,188	$501	12/31/2023
Hsbc Holdings PLC	17,286	$475	12/31/2023
PTCT	17,286	$475	12/31/2023
Schroder Investment Management Group	17,000	$469	12/31/2023
PTCT	17,000	$469	12/31/2023
ProShare Advisors LLC	16,749	$462	12/31/2023
PTCT	16,749	$462	12/31/2023
Handelsbanken Fonder AB	16,700	$460	12/31/2023
PTCT	16,700	$460	12/31/2023
Martingale Asset Management L P	16,093	$444	12/31/2023
PTCT	16,093	$444	12/31/2023
Teacher Retirement System of Texas	15,114	$440	03/31/2024
PTCT	15,114	$440	03/31/2024
China Universal Asset Management Co. Ltd.	14,752	$429	03/31/2024
PTCT	14,752	$429	03/31/2024
Diversified Trust Co	14,499	$422	03/31/2024
PTCT	14,499	$422	03/31/2024
MML Investors Services LLC	15,295	$422	12/31/2023
PTCT	15,295	$422	12/31/2023
Zurcher Kantonalbank Zurich Cantonalbank	14,319	$417	03/31/2024
PTCT	14,319	$417	03/31/2024
GSA Capital Partners LLP	13,707	$399	03/31/2024
PTCT	13,707	$399	03/31/2024
CWM Advisors LLC	14,047	$387	12/31/2023
PTCT	14,047	$387	12/31/2023
New York Life Investment Management LLC	12,753	$371	03/31/2024
PTCT	12,753	$371	03/31/2024
Graham Capital Management L.P.	13,023	$359	12/31/2023
PTCT	13,023	$359	12/31/2023
Vise Technologies Inc.	12,808	$353	12/31/2023
PTCT	12,808	$353	12/31/2023
Oracle Alpha Inc.	12,209	$336	12/31/2023
PTCT	12,209	$336	12/31/2023
Virtus ETF Advisers LLC	11,819	$326	12/31/2023
PTCT	11,819	$326	12/31/2023
RSM US Wealth Management LLC	10,974	$319	03/31/2024
PTCT	10,974	$319	03/31/2024
Los Angeles Capital Management & Equity Research Inc.	10,800	$314	03/31/2024
PTCT	10,800	$314	03/31/2024
Victory Capital Management Inc.	9,699	$282	03/31/2024
PTCT	9,699	$282	03/31/2024
Cipher Capital LP	9,704	$267	12/31/2023
PTCT	9,704	$267	12/31/2023
Man Group plc	9,700	$267	12/31/2023
PTCT	9,700	$267	12/31/2023
Public Employees Retirement Association of Colorado	9,200	$254	12/31/2023
PTCT	9,200	$254	12/31/2023
Virtu Financial LLC	9,222	$254	12/31/2023
PTCT	9,222	$254	12/31/2023
Avantax Advisory Services Inc.	9,079	$250	12/31/2023
PTCT	9,079	$250	12/31/2023
US Bancorp DE	8,441	$233	12/31/2023
PTCT	8,441	$233	12/31/2023
Ameritas Investment Partners Inc.	7,459	$206	12/31/2023
PTCT	7,459	$206	12/31/2023
Fox Run Management L.L.C.	7,415	$204	12/31/2023
PTCT	7,415	$204	12/31/2023
HRT Financial LP	7,310	$201	12/31/2023
PTCT	7,310	$201	12/31/2023
Tower Research Capital LLC TRC	6,648	$183	12/31/2023
PTCT	6,648	$183	12/31/2023
EntryPoint Capital LLC	5,662	$156	12/31/2023
PTCT	5,662	$156	12/31/2023
Group One Trading L.P.		$134	12/31/2023
Call	5,400	$149	12/31/2023
Put	900	$25	12/31/2023
PTCT	368	$10	12/31/2023
Headlands Technologies LLC	4,684	$129	12/31/2023
PTCT	4,684	$129	12/31/2023
Metropolitan Life Insurance Co NY	4,082	$112	12/31/2023
PTCT	4,082	$112	12/31/2023
CI Investments Inc.	3,382	$93	12/31/2023
PTCT	3,382	$93	12/31/2023
Amalgamated Bank	2,404	$70	03/31/2024
PTCT	2,404	$70	03/31/2024
Strs Ohio	2,200	$60	12/31/2023
PTCT	2,200	$60	12/31/2023
nVerses Capital LLC	2,000	$58	03/31/2024
PTCT	2,000	$58	03/31/2024
Lazard Asset Management LLC	1,763	$47	12/31/2023
PTCT	1,763	$47	12/31/2023
Allspring Global Investments Holdings LLC	1,574	$46	03/31/2024
PTCT	1,574	$46	03/31/2024
Macquarie Group Ltd.	1,582	$44	12/31/2023
PTCT	1,582	$44	12/31/2023
KBC Group NV	1,551	$43	12/31/2023
PTCT	1,551	$43	12/31/2023
Shell Asset Management Co.	1,482	$41	12/31/2023
PTCT	1,482	$41	12/31/2023
Northwestern Mutual Wealth Management Co.	1,453	$40	12/31/2023
PTCT	1,453	$40	12/31/2023
Hexagon Capital Partners LLC	1,068	$31	03/31/2024
PTCT	1,068	$31	03/31/2024
West Paces Advisors Inc.	1,000	$29	03/31/2024
PTCT	1,000	$29	03/31/2024
Fidelis Capital Partners LLC	842	$24	03/31/2024
PTCT	842	$24	03/31/2024
Nisa Investment Advisors LLC	729	$21	03/31/2024
PTCT	729	$21	03/31/2024
Lindbrook Capital LLC	521	$15	03/31/2024
PTCT	521	$15	03/31/2024
Simplex Trading LLC		$14	03/31/2024
Call	1,400	$40	03/31/2024
Put	900	$26	03/31/2024
Signaturefd LLC	319	$9	03/31/2024
PTCT	319	$9	03/31/2024
Advisor Group Holdings Inc.	317	$9	12/31/2023
PTCT	317	$9	12/31/2023
Daiwa Securities Group Inc.	289	$8	03/31/2024
PTCT	289	$8	03/31/2024
Allworth Financial LP	90	$3	03/31/2024
PTCT	90	$3	03/31/2024
GAMMA Investing LLC	90	$3	03/31/2024
PTCT	90	$3	03/31/2024
CENTRAL TRUST Co	43	$1	03/31/2024
PTCT	43	$1	03/31/2024
CWM LLC	48	$1	03/31/2024
PTCT	48	$1	03/31/2024
Global Retirement Partners LLC	35	$1	03/31/2024
PTCT	35	$1	03/31/2024
Byrne Asset Management LLC	25	$1	03/31/2024
PTCT	25	$1	03/31/2024
Smartleaf Asset Management LLC	18	$1	03/31/2024
PTCT	18	$1	03/31/2024
Comerica Bank	21	$1	12/31/2023
PTCT	21	$1	12/31/2023
Proequities Inc.		$0	03/31/2024
Put	0	$0	03/31/2024
Call	0	$0	03/31/2024
PTCT	0	$0	03/31/2024
NOTE 1	0	$0	03/31/2024
JFS Wealth Advisors LLC	13	$0	03/31/2024
PTCT	13	$0	03/31/2024
Nelson Van Denburg & Campbell Wealth Management Group LLC	14	$0	03/31/2024
PTCT	14	$0	03/31/2024
Riggs Asset Managment Co. Inc.	11	$0	03/31/2024
PTCT	11	$0	03/31/2024
SJS Investment Consulting Inc.	7	$0	03/31/2024
PTCT	7	$0	03/31/2024
DiNuzzo Private Wealth Inc.	5	$0	03/31/2024
PTCT	5	$0	03/31/2024
The PNC Financial Services Group Inc.	14	$0	12/31/2023
PTCT	14	$0	12/31/2023
Elequin Capital LP	7	$0	12/31/2023
PTCT	7	$0	12/31/2023
Covestor Ltd	6	$0	12/31/2023
PTCT	6	$0	12/31/2023
Farther Finance Advisors LLC	2	$0	12/31/2023
PTCT	2	$0	12/31/2023

See Summary: Institutional Holders of PTCT
See Details: Top 10 Hedge Funds Holding PTCT
Also See: PTCT Insider Buying
Also See: PTCT Holdings Changes

PTCT — Current Quote

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PTCT — Performance