Institutional Manager · CIK 0001553936
TYBOURNE CAPITAL MANAGEMENT (HK) LTD
HONG KONG, K3 · File #028-15146
Latest AUM
$30.9M
Positions
4
Top-10 Concentration
100.0%
Filings
8
Portfolio Value Over Time
2023-12
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| EXITED | BICYCLE THERAPEUTICS LTD-ADR (BCYC US) | 088786108 | -993,743 | -$6.9M | $0 |
| EXITED | MALIBU BOATS INC (MBUU US) | 56117J100 | -66,705 | -$2.1M | $0 |
| REDUCE | TAYSHA GENE THERAPIES INC (TSHA US) | 877619106 | -395,000 | -$1.3M | +$3.9M |
| REDUCE | ZENTALIS PHARMACEUTICALS INC (ZNTL US) | 98943L107 | -516,666 | -$780,166 | +$517,354 |
| REDUCE | ALUMIS INC (ALMS US) | 022307102 | 0 | $0 | +$1.4M |
| REDUCE | FORTE BIOSCIENCES INC (FBRX US) | 34962G208 | 0 | $0 | +$1.6M |
Filing History
- 13F HOLDINGS REPORTQ/E Sep 20254 pos · $30.9M
- 13F HOLDINGS REPORTQ/E Jun 20256 pos · $34.5M
- 13F HOLDINGS REPORTQ/E Mar 20255 pos · $23.6M
- 13F HOLDINGS REPORTQ/E Dec 202437 pos · $398.4M
- 13F HOLDINGS REPORTQ/E Sep 202434 pos · $356.7M
- 13F HOLDINGS REPORTQ/E Jun 202440 pos · $491.7M
- 13F HOLDINGS REPORTQ/E Mar 202441 pos · $584.9M
- 13F HOLDINGS REPORTQ/E Dec 202341 pos · $715.7M
Top 4 Holdings — Sep 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | TAYSHA GENE THERAPIES INC (TSHA US) | 877619106 | 3,700,000 | $12.1M | 39.11% |
| 2 | FORTE BIOSCIENCES INC (FBRX US) | 34962G208 | 786,647 | $11.8M | 38.15% |
| 3 | ALUMIS INC (ALMS US) | 022307102 | 1,399,250 | $5.6M | 18.05% |
| 4 | ZENTALIS PHARMACEUTICALS INC (ZNTL US) | 98943L107 | 961,486 | $1.5M | 4.69% |