Partner Fund Management, L.P.
CIK 1442756 · Holdings on Mar 31, 2025 · First reported May 15, 2025
Top ten holdings
Q1 2025- LLY17.34%
- ABBV5.33%
- THC5.07%
- MCK5.03%
- AXSM4.98%
- VRTX4.72%
- ISRG3.54%
- PEN3.41%
- SLNO3.26%
- ARGX3.13%
Share classes counted separately55.81%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- SLNOWeight increased · +2.21 pp1.05% → 3.26%Shares +287.70K (+93.56%)
- AXSMWeight increased · +1.97 pp3.01% → 4.98%Shares +89.12K (+19.07%)
- BBIOWeight increased · +1.80 pp0.61% → 2.41%Shares +617.89K (+212.89%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 28
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | LLYELI LILLY & CO View history and evidence | $226.12M | 17.34% | 273.78K shares | 17.56% → 17.34%-0.22 pp -24.86K (-8.33%) | Reduced | ↗▾ |
| 02 | ABBVABBVIE INC View history and evidence | $69.51M | 5.33% | 331.74K shares | 4.49% → 5.33%+0.84 pp 0 (0.00%) | Unchanged | ↗▾ |
| 03 | THCTENET HEALTHCARE CORPCOM NEW View history and evidence | $66.08M | 5.07% | 491.33K shares | 4.72% → 5.07%+0.35 pp 0 (0.00%) | Unchanged | ↗▾ |
| 04 | MCKMCKESSON CORP View history and evidence | $65.62M | 5.03% | 97.50K shares | 4.23% → 5.03%+0.80 pp 0 (0.00%) | Unchanged | ↗▾ |
| 05 | AXSMAXSOME THERAPEUTICS INC View history and evidence | $64.91M | 4.98% | 556.54K shares | 3.01% → 4.98%+1.97 pp +89.12K (+19.07%) | Added | ↗▾ |
| 06 | VRTXVERTEX PHARMACEUTICALS INC View history and evidence | $61.57M | 4.72% | 126.99K shares | 3.90% → 4.72%+0.82 pp 0 (0.00%) | Unchanged | ↗▾ |
| 07 | ISRGINTUITIVE SURGICAL INCCOM NEW View history and evidence | $46.10M | 3.54% | 93.07K shares | 3.70% → 3.54%-0.16 pp 0 (0.00%) | Unchanged | ↗▾ |
| 08 | PENPENUMBRA INC View history and evidence | $44.46M | 3.41% | 166.26K shares | 3.01% → 3.41%+0.40 pp 0 (0.00%) | Unchanged | ↗▾ |
| 09 | SLNOSOLENO THERAPEUTICS INC View history and evidence | $42.53M | 3.26% | 595.21K shares | 1.05% → 3.26%+2.21 pp +287.70K (+93.56%) | Added | ↗▾ |
| 10 | ARGXARGENX SE - ADRSPONSORED ADR View history and evidence | $40.84M | 3.13% | 69.00K shares | 2.98% → 3.13%+0.15 pp +5.30K (+8.32%) | Added | ↗▾ |
Options overlay 2
$73.60M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
XLVSS HEALTH CARE SELECT SECTORSBI HEALTHCARE View history and evidence | Call | 429.70K | $62.74M | -35.00K (-7.53%) | ▾ |
XRTSS SPDR S&P RETAIL ETFS&P RETAIL ETF View history and evidence | Call | 157.20K | $10.86M | +157.20K | ▾ |
2 / 2 options · preview only
Exited positions 30
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| IEF ISHARES 7-10 YEAR TREASURY B | Put | -1,000,000 | -$92.45M | SEC filing ↗ | SEC filing ↗ |
| EW EDWARDS LIFESCIENCES CORP | Call | -525,400 | -$38.90M | SEC filing ↗ | SEC filing ↗ |
| UNH UNITEDHEALTH GROUP INC | Call | -57,300 | -$28.99M | SEC filing ↗ | SEC filing ↗ |
3 / 30 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1442756 · Period 2025-03-31
Data loaded 2026-09-23 · First reported 2025-05-15
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 1377290641
}Research all 66 reported holdings.
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