There is a long list of 83 institutional holders of GTHX 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 GTHX by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-GTHX table below, the initial column indicates the name of each top institutional holder of GTHX, with a link to that fund's top holdings. The next columns indicate the amount of GTHX stock held by each of the institutional holders of GTHX, followed by the GTHX 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
Vanguard Group Inc.	1,981,673	$6,044	12/31/2023
GTHX	1,981,673	$6,044	12/31/2023
Susquehanna International Group LLP		$4,992	12/31/2023
GTHX	1,578,601	$4,815	12/31/2023
Call	148,800	$454	12/31/2023
Put	90,900	$277	12/31/2023
Raymond James & Associates	802,835	$3,468	03/31/2024
GTHX	802,835	$3,468	03/31/2024
Group One Trading L.P.		$2,392	12/31/2023
GTHX	521,327	$1,590	12/31/2023
Call	277,200	$845	12/31/2023
Put	14,100	$43	12/31/2023
BlackRock Inc.	680,664	$2,076	12/31/2023
GTHX	680,664	$2,076	12/31/2023
Renaissance Technologies LLC	630,400	$1,923	12/31/2023
GTHX	630,400	$1,923	12/31/2023
D. E. Shaw & Co. Inc.	495,451	$1,511	12/31/2023
GTHX	495,451	$1,511	12/31/2023
Geode Capital Management LLC	460,775	$1,406	12/31/2023
GTHX	460,775	$1,406	12/31/2023
Standard Life Aberdeen plc	423,869	$1,293	12/31/2023
GTHX	423,869	$1,293	12/31/2023
Marshall Wace LLP	360,293	$1,099	12/31/2023
GTHX	360,293	$1,099	12/31/2023
Schonfeld Strategic Advisors LLC	340,784	$1,039	12/31/2023
GTHX	340,784	$1,039	12/31/2023
Jacobs Levy Equity Management Inc.	313,068	$955	12/31/2023
GTHX	313,068	$955	12/31/2023
Bank of America Corp DE	279,459	$852	12/31/2023
GTHX	279,459	$852	12/31/2023
Jane Street Group LLC		$764	12/31/2023
GTHX	222,600	$679	12/31/2023
Call	28,000	$85	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	192,110	$586	12/31/2023
GTHX	192,110	$586	12/31/2023
Needham Investment Management LLC	180,000	$549	12/31/2023
GTHX	180,000	$549	12/31/2023
Level Four Advisory Services LLC	178,600	$545	12/31/2023
GTHX	178,600	$545	12/31/2023
Morgan Stanley	170,058	$519	12/31/2023
GTHX	170,058	$519	12/31/2023
Two Sigma Investments LP	162,063	$494	12/31/2023
GTHX	162,063	$494	12/31/2023
State Street Corp	161,106	$491	12/31/2023
GTHX	161,106	$491	12/31/2023
XTX Topco Ltd	157,201	$479	12/31/2023
GTHX	157,201	$479	12/31/2023
Adage Capital Partners GP L.L.C.	150,000	$458	12/31/2023
GTHX	150,000	$458	12/31/2023
Man Group plc	146,666	$447	12/31/2023
GTHX	146,666	$447	12/31/2023
FinTrust Capital Advisors LLC	100,780	$435	03/31/2024
GTHX	100,780	$435	03/31/2024
Two Sigma Advisers LP	132,800	$405	12/31/2023
GTHX	132,800	$405	12/31/2023
Northern Trust Corp	125,524	$383	12/31/2023
GTHX	125,524	$383	12/31/2023
Denali Advisors LLC	86,100	$372	03/31/2024
GTHX	86,100	$372	03/31/2024
Bridgeway Capital Management Inc.	120,000	$366	12/31/2023
GTHX	120,000	$366	12/31/2023
Franklin Street Advisors Inc. NC	83,400	$360	03/31/2024
GTHX	83,400	$360	03/31/2024
Citigroup Inc.	85,949	$262	12/31/2023
GTHX	85,949	$262	12/31/2023
Birchview Capital LP	80,000	$244	12/31/2023
GTHX	80,000	$244	12/31/2023
Dimensional Fund Advisors LP	76,666	$234	12/31/2023
GTHX	76,666	$234	12/31/2023
Curi Capital	70,795	$216	12/31/2023
GTHX	70,795	$216	12/31/2023
683 Capital Management LLC	63,765	$194	12/31/2023
GTHX	63,765	$194	12/31/2023
FMR LLC	61,314	$187	12/31/2023
GTHX	61,314	$187	12/31/2023
Acadian Asset Management LLC	58,355	$177	12/31/2023
GTHX	58,355	$177	12/31/2023
Creative Financial Designs Inc. ADV	40,505	$175	03/31/2024
GTHX	40,505	$175	03/31/2024
Citadel Advisors LLC		$166	12/31/2023
Call	50,100	$153	12/31/2023
GTHX	43,966	$134	12/31/2023
Put	39,600	$121	12/31/2023
RSM US Wealth Management LLC	35,234	$152	03/31/2024
GTHX	35,234	$152	03/31/2024
Qube Research & Technologies Ltd	47,296	$144	12/31/2023
GTHX	47,296	$144	12/31/2023
Raymond James Financial Services Advisors Inc.	31,411	$136	03/31/2024
GTHX	31,411	$136	03/31/2024
Virtu Financial LLC	44,726	$136	12/31/2023
GTHX	44,726	$136	12/31/2023
Engineers Gate Manager LP	44,639	$136	12/31/2023
GTHX	44,639	$136	12/31/2023
Beacon Pointe Advisors LLC	43,700	$133	12/31/2023
GTHX	43,700	$133	12/31/2023
Capstone Investment Advisors LLC	27,250	$118	03/31/2024
GTHX	27,250	$118	03/31/2024
Algert Global LLC	38,470	$117	12/31/2023
GTHX	38,470	$117	12/31/2023
Ameriprise Financial Inc.	35,500	$108	12/31/2023
GTHX	35,500	$108	12/31/2023
Jump Financial LLC	34,400	$105	12/31/2023
GTHX	34,400	$105	12/31/2023
Millennium Management LLC	31,046	$95	12/31/2023
GTHX	31,046	$95	12/31/2023
Envestnet Asset Management Inc.	27,681	$84	12/31/2023
GTHX	27,681	$84	12/31/2023