Platinum Investment Management
Platinum Investment Management reported 85 stocks worth $407M in its 13F filing for Q2 2026, filed Aug 13, 2026. Its largest holdings are ZTO (11.0%), MU (5.0%) and LRCX (5.0%). Compared with Q1 2026, the fund opened new positions in DDOG, ADI and NOW, added to COGT, IDYA and GPCR, trimmed MU, TCOM and BIRK and sold out of GOOGL, MA and ISRG.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  ZTO Zto Express Cayman Inc | $44.6M | 11.0% | 2M | No change | 8 of 8 | |
| 2 |  MU Micron Technology Inc | $20.5M | 5.0% | 18K | −5,874 (−25%) | 8 of 8 | |
| 3 |  LRCX Lam Research Corp | $20.1M | 5.0% | 46K | No change | 7 of 8 | |
| 4 |  TCOM Trip Com Group Ltd | $14M | 3.5% | 352K | −28K (−7%) | 8 of 8 | |
| 5 |  DDL Dingdong Cayman Ltd F | $12.5M | 3.1% | 6.5M | No change | 8 of 8 | |
| 6 |  NOAH Noah Hldgs Ltd | $9.9M | 2.4% | 994K | No change | 8 of 8 | |
| 7 |  AVGO Broadcom Inc | $9.9M | 2.4% | 26K | No change | 8 of 8 | |
| 8 |  BIRK Birkenstock Holding PLC | $9M | 2.2% | 210K | −65K (−24%) | 8 of 8 | |
| 9 |  AZN Astrazeneca PLC Ord | $9M | 2.2% | 48K | No change | 2 of 8 | |
| 10 |  GOOG Alphabet Inc | $8.7M | 2.1% | 25K | No change | 8 of 8 |
Positions at Jun 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q1 2026, gone in Q2 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
TERNS PHARMACEUTICALS INC | $5.8M | 111K |
CENTESSA PHARMACEUTICALS PLC | $5.5M | 138K |
 GOOGL Alphabet Inc | $3.5M | 12K |
 MA Mastercard Incorporated | $2.8M | 5,689 |
 ISRG Intuitive Surgical Inc | $2.2M | 4,846 |
🔒 Free account: see all 14.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q2 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Aug 13, 2026 | 13F-HR | Q2 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Platinum Investment Management 13F FAQ
What does Platinum Investment Management own?
Platinum Investment Management reported 85 stocks worth $407M in its 13F filing for Q2 2026, filed Aug 13, 2026. Its largest holdings are ZTO (11.0%), MU (5.0%) and LRCX (5.0%). The table above lists every position in the filing (the top 10 without an account).
What did Platinum Investment Management buy and sell in Q2 2026?
Compared with Q1 2026: 10 new positions, 10 added to, 22 trimmed and 14 sold out. New positions include DDOG, ADI and NOW. It sold all of GOOGL, MA and ISRG.
When will Platinum Investment Management file its next 13F?
Holdings as of Sep 30, 2026 are due by Nov 16, 2026. The filing appears on this page within minutes of reaching the SEC.
How much is Platinum Investment Management's portfolio worth?
The Q2 2026 filing reports $407M in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.