Institutional Manager · CIK 0001631614
New Leaf Venture Partners, L.L.C.
New York, NY · File #028-16681
Latest AUM
$43.0M
Positions
7
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 |
|---|---|---|---|---|---|
| REDUCE | PASG | 702712100 | -2,410,496 | -$19.4M | +$74,944 |
| EXITED | ITERUM THERAPEUTICS PLC | G6333L200 | -345,020 | -$343,295 | $0 |
| REDUCE | ALEC | 014442107 | 0 | $0 | +$529,727 |
| REDUCE | ARVN | 04335A105 | 0 | $0 | +$1.8M |
| REDUCE | COGT | 19240Q201 | 0 | $0 | +$1.8M |
| REDUCE | CRNX | 22663K107 | 0 | $0 | +$1.8M |
| REDUCE | EWTX | 28036F105 | 0 | $0 | +$3.2M |
| REDUCE | RLYB | 75120L100 | 0 | $0 | +$531,558 |
Filing History
- 13F HOLDINGS REPORTQ/E Sep 20257 pos · $43.0M
- 13F HOLDINGS REPORTQ/E Jun 20258 pos · $52.9M
- 13F HOLDINGS REPORTQ/E Mar 20259 pos · $44.9M
- 13F HOLDINGS REPORTQ/E Dec 20249 pos · $74.8M
- 13F HOLDINGS REPORTQ/E Sep 202410 pos · $97.3M
- 13F HOLDINGS REPORTQ/E Jun 202410 pos · $82.2M
- 13F HOLDINGS REPORTQ/E Mar 202411 pos · $114.3M
- 13F HOLDINGS REPORTQ/E Dec 202312 pos · $77.9M
Top 7 Holdings — Sep 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | EWTX | 28036F105 | 1,030,161 | $16.7M | 38.82% |
| 2 | ARVN | 04335A105 | 1,585,721 | $13.5M | 31.38% |
| 3 | CRNX | 22663K107 | 141,000 | $5.9M | 13.64% |
| 4 | COGT | 19240Q201 | 250,765 | $3.6M | 8.37% |
| 5 | RLYB | 75120L100 | 3,301,603 | $1.6M | 3.83% |
| 6 | ALEC | 014442107 | 339,569 | $1.0M | 2.33% |
| 7 | PASG | 702712100 | 87,426 | $702,031 | 1.63% |