Q2 2026 13F · SEC CIK 1256071

Platinum Investment Management Ltd

Asset managerFiled 2026-08-13 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $406.7M
Reported positions: 85
Top holdings a year, 3 yrs: +15.8%
Average holding period: 5.9 yrs

Platinum Investment Management Ltd is an asset manager that reported 85 positions worth $406.7M in its Q2 2026 13F, filed 2026-08-13. Its largest holdings were Zto Express Cayman Inc (ZTO, 11.0%), Micron Technology Inc (MU, 5.0%), Lam Research Corp (LRCX, 4.9%). A portfolio copying its top holdings returned 15.8% a year over the last 3 years, against 20.4% for the S&P 500.

Platinum Investment Management Ltd holdings largest 50 of 85 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Platinum Investment Management Ltd 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
ZTOZto Express Cayman Inc	11.0%	12.7%	1,994,127	+0.0%	$44.6M
MUMicron Technology Inc	5.0%	2.0%	17,782	-24.8%	$20.5M
LRCXLam Research Corp	4.9%	2.5%	46,439	+0.0%	$20.1M
TCOMTrip Com Group Ltd	3.4%	4.8%	351,921	-7.3%	$14.0M
DDLDingdong Cayman Ltd	3.1%	4.2%	6,486,507	+0.0%	$12.5M
NOAHNoah Holdings Ltd-Spon Ads	2.4%	2.5%	993,612	+0.0%	$9.9M
AVGOBroadcom Inc	2.4%	2.0%	26,186	+0.0%	$9.9M
BIRKBirkenstock Holdings	2.2%	2.5%	210,000	-23.6%	$9.0M
AZNAstrazeneca PLC Ord	2.2%	2.3%	48,088	+0.0%	$9.0M
GOOGAlphabet Inc	2.1%	1.8%	24,592	+0.0%	$8.7M
MRKMerck & Co. Inc	2.0%	1.9%	63,316	+0.0%	$8.1M
APGEApogee Therapeutics Inc	1.9%	1.2%	58,314	+0.0%	$7.7M
ABBVAbbvie Inc	1.9%	1.6%	30,102	+0.0%	$7.6M
JNJJohnson & Johnson	1.7%	1.7%	27,830	+0.0%	$7.1M
YUMYum Brands Inc	1.6%	1.6%	39,847	+0.0%	$6.4M
PDDPdd Holdings Inc	1.5%	2.0%	78,445	+0.0%	$6.0M
COGTCogent Biosciences Inc	1.5%	1.1%	154,220	+37.6%	$6.0M
UBSUbs Group AG	1.4%	1.1%	117,507	+0.0%	$5.8M
NVDANvidia Corporation Com	1.4%	1.2%	28,191	+0.0%	$5.6M
IMVTImmunovant Inc	1.4%	1.1%	144,671	-20.4%	$5.6M
ARWRArrowhead Pharmaceuticals in	1.3%	1.0%	64,752	+0.0%	$5.3M
IDYAIdeaya Biosciences Inc	1.3%	0.8%	138,708	+51.4%	$5.2M
IQVIqvia Holdings Inc	1.3%	1.1%	26,708	+0.0%	$5.2M
HTHTH World Group Ltd	1.2%	1.5%	117,996	+0.0%	$4.9M
VERAVera Therapeutics Inc	1.2%	1.2%	113,687	+0.0%	$4.9M
GPCRStructure Therapeutics Inc	1.2%	0.8%	90,363	+35.1%	$4.8M
VVisa Inc Com Cl A	1.2%	1.1%	14,000	-6.7%	$4.8M
CATCaterpillar Inc Com	1.2%	1.5%	4,500	-47.1%	$4.8M
RCIRogers Communications Inc	1.2%	1.4%	147,160	+0.0%	$4.8M
ASAmer Sports Inc	1.2%	1.2%	140,000	-6.7%	$4.7M
KRThe Kroger Co	1.1%	1.1%	81,305	+33.9%	$4.5M
KLACKla Corp	1.1%	—	14,580	—	$4.4M
CCJCameco Corp Com	1.1%	1.2%	42,356	+0.0%	$4.3M
AMDAdvanced Micro Devices Inc	1.0%	—	7,210	—	$4.2M
RCUSArcus Biosciences Inc.	1.0%	0.7%	134,217	+0.0%	$4.1M
ADBEAdobe Inc	0.9%	1.1%	18,571	+0.0%	$3.8M
FNDFloor & Decor Hldgs Inc	0.9%	0.9%	62,500	-7.4%	$3.7M
METAMeta Platforms Inc Class A	0.9%	—	6,500	—	$3.7M
PALIPalisade Bio Inc	0.9%	—	1,730,866	—	$3.6M
BROSDutch Bros Inc	0.9%	—	50,000	—	$3.6M
FICOFair Isaac Corp	0.9%	0.9%	3,000	-11.8%	$3.6M
GEVGe Vernova Inc	0.9%	—	3,047	—	$3.6M
HDHome Depot Inc Com	0.9%	1.0%	10,000	-13.0%	$3.5M
VALValaris Ltd	0.8%	1.1%	45,956	+0.0%	$3.3M
ELFe.l.f. Beauty	0.8%	1.1%	45,000	-37.9%	$3.3M
CAVACava Group Inc	0.8%	0.9%	42,000	-6.7%	$3.3M
24477V105Definium Therapeutics Inc	0.8%	—	70,000	—	$3.3M
ROIVRoivant Sciences Ltd	0.8%	—	92,397	—	$3.3M
TRUTransunion	0.8%	0.8%	44,595	+0.0%	$3.2M
RVMDRevolution Medicines Inc	0.8%	—	16,994	—	$3.2M

What Platinum Investment Management Ltd bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

IDYA Ideaya Biosciences Inc+51.4% shares
COGT Cogent Biosciences Inc+37.6% shares
GPCR Structure Therapeutics Inc+35.1% shares
KR The Kroger Co+33.9% shares

Reduced

Left the top 50

TERN Terns Pharmaceuticals Incwas 1.5%
CNTA Centessa Pharmaceuticals PLCwas 1.4%
ZTS Zoetis Incwas 1.3%
NFLX Netflix Inc Totalwas 1.2%
ICE Intercontinental Exchange inwas 0.9%
ADCT Adc Therapeutics SAwas 0.9%
BBIO Bridgebio Pharma Incwas 0.9%
GOOGL Alphabet Incwas 0.9%

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +31.3% /yr; S&P 500 +20.1%
3 years: +15.8% /yr; S&P 500 +20.4%
5 years: +9.2% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$406.7M	85
Q1 2026	$396.8M	89
Q4 2025	$432.7M	124
Q3 2025	$1.5B	120
Q2 2025	$1.5B	115
Q1 2025	$1.7B	115
Q4 2024	$1.7B	115
Q3 2024	$2.2B	122
Q2 2024	$2.5B	134
Q1 2024	$2.5B	139
Q4 2023	$2.5B	142
Q3 2023	$2.6B	144

Questions about Platinum Investment Management Ltd's portfolio

What stocks does Platinum Investment Management Ltd own?

Platinum Investment Management Ltd's latest 13F, for Q2 2026 and filed Aug 13, 2026, lists 85 positions worth $406.7M. The largest are Zto Express Cayman Inc (ZTO) at 11.0%, Micron Technology Inc (MU) at 5.0%, Lam Research Corp (LRCX) at 4.9%, Trip Com Group Ltd (TCOM) at 3.4% and Dingdong Cayman Ltd (DDL) at 3.1%.

What did Platinum Investment Management Ltd buy last quarter?

In Q2 2026, Platinum Investment Management Ltd added Ideaya Biosciences Inc (IDYA) (+51.4% shares), Cogent Biosciences Inc (COGT) (+37.6% shares) and Structure Therapeutics Inc (GPCR) (+35.1% shares), compared with its Q1 2026 filing.

What did Platinum Investment Management Ltd sell last quarter?

In Q2 2026, Platinum Investment Management Ltd cut from its top 50 Terns Pharmaceuticals Inc (TERN), cut from its top 50 Centessa Pharmaceuticals PLC (CNTA), cut from its top 50 Zoetis Inc (ZTS), cut from its top 50 Netflix Inc Total (NFLX), cut from its top 50 Intercontinental Exchange in (ICE), Caterpillar Inc Com (CAT) (-47.1% shares), e.l.f. Beauty (ELF) (-37.9% shares) and Micron Technology Inc (MU) (-24.8% shares), compared with its Q1 2026 filing.

How has Platinum Investment Management Ltd's portfolio performed?

A portfolio copying Platinum Investment Management Ltd's 20 largest 13F holdings each quarter, from the day each filing was public, returned +15.8% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +31.3% against +20.1%. Over 5 years: +9.2% a year against +11.6%.

When is Platinum Investment Management Ltd's next 13F filing due?

13F filings are due 45 days after each quarter ends. Platinum Investment Management Ltd's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.