CIK: 0001599882
Total reported value
$810.5M
Reporting period: 2026-03-31 · Number of holdings: 86
Rhenman & Partners Asset Management AB disclosed 86 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $810.5M and a quarterly turnover rate of 57.1%.
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Rhenman & Partners Asset Management AB's disclosed holdings carry a Herfindahl concentration index of 0.019 — mathematically equivalent to about 52 equally-sized positions, close to its 86 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.81), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim COO
-84.7% -$23.3M
Trim MDT
-69.6% -$20.6M
Trim DHR
-81.8% -$19.3M
Add GILD
+33.0% $7.9M
Add INSM
+40.7% $6.4M
Trim ALGN
-92.4% -$14.2M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | BSX | Boston Scientific CORP | Stock-Healthcare | 4.84% | — | +44.94% | |
| 2 | REGN | Regeneron Pharmaceuticals | Stock-Healthcare | 4.59% | +0.16% | -21.66% | |
| 3 | LLY | Eli Lilly & Co | Stock-Healthcare | 3.83% | -0.41% | -20.14% | |
| 4 | INSM | Insmed INC | Stock-Healthcare | 3.22% | +1.37% | +40.65% | |
| 5 | CVS | Cvs Health CORP | Stock-Healthcare | 2.98% | — | +0.30% | |
| 6 | GILD | Gilead Sciences INC | Stock-Healthcare | 2.88% | +1.43% | +32.98% | |
| 7 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 2.51% | — | +22.89% | |
| 8 | BIIB | Biogen INC | Stock-Healthcare | 2.47% | +0.95% | +18.14% | |
| 9 | VRTX | Vertex Pharmaceuticals INC | Stock-Healthcare | 2.40% | +0.95% | +26.95% | |
| 10 | ALHC | Alignment Healthcare INC | Stock-Other | 2.29% | — | +4.36% | |
| 11 | ISRG | Intuitive Surgical INC | Stock-Healthcare | 2.10% | -0.44% | -23.24% | |
| 12 | COR | Cencora INC | Stock-Healthcare | 2.03% | +0.03% | -17.36% | |
| 13 | SYK | Stryker CORP | Stock-Healthcare | 1.94% | +1.94% | NEW | |
| 14 | ABBV | Abbvie INC | Stock-Healthcare | 1.92% | -0.44% | -35.27% | |
| 15 | VEEV | Veeva Systems Inc-class A | Stock-Healthcare | 1.85% | +1.85% | NEW | |
| 16 | MCK | Mckesson CORP | Stock-Healthcare | 1.80% | -0.16% | -34.18% | |
| 17 | JAZZ | Jazz Pharmaceuticals plc | Stock-Healthcare | 1.77% | — | +2.51% | |
| 18 | GH | Guardant Health INC | Stock-Healthcare | 1.65% | +0.89% | +81.25% | |
| 19 | NBIX | Neurocrine Biosciences INC | Stock-Healthcare | 1.64% | -0.02% | -19.64% | |
| 20 | EW | Edwards Lifesciences CORP | Stock-Healthcare | 1.61% | — | -15.76% | |
| 21 | MDGL | Madrigal Pharmaceuticals INC | Stock-Healthcare | 1.55% | — | +23.02% | |
| 22 | UNH | Unitedhealth Group INC | Stock-Healthcare | 1.52% | -0.17% | -17.12% | |
| 23 | PRCT | Procept Biorobotics CORP | Stock-Other | 1.47% | -0.33% | -22.26% | |
| 24 | BMRN | Biomarin Pharmaceutical INC | Stock-Healthcare | 1.44% | — | -3.72% | |
| 25 | ABT | Abbott Laboratories | Stock-Healthcare | 1.42% | +1.42% | NEW | |
| 26 | ALNY | Alnylam Pharmaceuticals INC | Stock-Healthcare | 1.41% | -0.29% | -24.54% | |
| 27 | RPRX | Royalty Pharma plc | Stock-Healthcare | 1.38% | — | +12.83% | |
| 28 | AXSM | Axsome Therapeutics INC | Stock-Healthcare | 1.33% | -0.63% | -44.43% | |
| 29 | NTRA | Natera INC | Stock-Healthcare | 1.27% | — | +27.41% | |
| 30 | THC | Tenet Healthcare CORP | Stock-Healthcare | 1.26% | -0.16% | -29.42% | |
| 31 | ADPT | Adaptive Biotechnologies | Stock-Other | 1.23% | — | +19.01% | |
| 32 | LIVN | LivaNova PLC | Stock-Other | 1.22% | — | -18.42% | |
| 33 | ELV | Elevance Health INC | Stock-Healthcare | 1.17% | +0.68% | +115.33% | |
| 34 | ARWR | Arrowhead Pharmaceuticals In | Stock-Healthcare | 1.12% | — | — | |
| 35 | GKOS | Glaukos CORP | Stock-Healthcare | 1.12% | -1.10% | -60.00% | |
| 36 | IQV | Iqvia Holdings INC | Stock-Healthcare | 1.12% | — | +100.00% | |
| 37 | SNDX | Syndax Pharmaceuticals INC | Stock-Other | 1.09% | — | -22.13% | |
| 38 | MIRM | Mirum Pharmaceuticals INC | Stock-Other | 1.06% | — | -12.85% | |
| 39 | IDYA | Ideaya Biosciences INC | Stock-Other | 1.05% | — | +2.20% | |
| 40 | PNTG | Pennant Group Inc/the | Stock-Other | 1.04% | — | -22.93% | |
| 41 | NUVL | Nuvalent Inc-a | Stock-Other | 1.03% | -0.51% | -50.29% | |
| 42 | WAY | Waystar Holding CORP | Stock-Other | 1.02% | +1.02% | NEW | |
| 43 | AVR | Anteris Technologies Global | Stock-Other | 0.99% | — | +16.15% | |
| 44 | MDT | Medtronic plc | Stock-Healthcare | 0.96% | -1.70% | -69.59% | |
| 45 | OSCR | Oscar Health INC - Class A | Stock-Healthcare | 0.93% | +0.58% | +153.85% | |
| 46 | IOVA | Iovance Biotherapeutics INC | Stock-Other | 0.89% | — | +28.83% | |
| 47 | MLYS | Mineralys Therapeutics INC | Stock-Other | 0.88% | — | +84.52% | |
| 48 | IONS | Ionis Pharmaceuticals INC | Stock-Healthcare | 0.86% | -0.31% | -41.39% | |
| 49 | DNTH | Dianthus Therapeutics INC | Stock-Other | 0.85% | — | -17.24% | |
| 50 | BBIO | Bridgebio Pharma INC | Stock-Healthcare | 0.83% | — | +11.03% |
Performance for Q3 2026
+9%
Performance Last 4 Quarters
+23.9%
Based on 73% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 86 | $810.5M | 57 | |
| 2025-12-31 | 94 | $1.1B | 47 | |
| 2025-09-30 | 92 | $903.7M | 68 | |
| 2025-06-30 | 90 | $791.0M | 0 | |
| 2025-03-31 | 94 | $870.0M | 100 | |
| 2024-12-31 | 92 | $972.9M | 0 | |
| 2024-09-30 | 95 | $1.2B | 0 | |
| 2024-06-30 | 93 | $1.0B | 0 | |
| 2024-03-31 | 84 | $1.1B | 0 | |
| 2023-12-31 | 85 | $1.0B | 0 | |
| 2023-09-30 | 85 | $927.5M | 0 | |
| 2023-06-30 | 83 | $948.7M | 0 | |
| 2023-03-31 | 88 | $910.9M | 0 | |
| 2022-12-31 | 93 | $958.5M | 0 | |
| 2022-09-30 | 90 | $955.0M | 0 | |
| 2022-06-30 | 86 | $880.2M | 0 | |
| 2022-03-31 | 89 | $1.0B | 0 | |
| 2021-12-31 | 92 | $1.5B | 0 | |
| 2021-09-30 | 92 | $1.4B | 0 | |
| 2021-06-30 | 94 | $1.5B | 99 | |
| 2021-03-31 | 92 | $1.4B | 37 | |
| 2020-12-31 | 83 | $1.2B | 42 | |
| 2020-09-30 | 82 | $1.1B | 33 | |
| 2020-06-30 | 94 | $925.6M | 36 | |
| 2020-03-31 | 85 | $713.8M | 36 | |
| 2019-12-31 | 94 | $912.5M | 43 | |
| 2019-09-30 | 93 | $797.7M | 39 | |
| 2019-06-30 | 88 | $907.9M | 36 | |
| 2019-03-31 | 93 | $854.9M | 39 | |
| 2018-12-31 | 89 | $874.8M | 36 | |
| 2018-09-30 | 88 | $998.0M | 29 | |
| 2018-06-30 | 89 | $977.1M | 36 | |
| 2018-03-31 | 92 | $811.3M | 38 | |
| 2017-12-31 | 95 | $740.1M | 39 | |
| 2017-09-30 | 94 | $783.3M | 49 | |
| 2017-06-30 | 108 | $696.5M | 38 | |
| 2017-03-31 | 104 | $631.5M | 44 | |
| 2016-12-31 | 108 | $521.6M | 56 | |
| 2016-09-30 | 107 | $629.6M | 55 | |
| 2016-06-30 | 97 | $563.1M | 40 | |
| 2016-03-31 | 92 | $503.8M | 44 | |
| 2015-12-31 | 96 | $661.4M | 36 | |
| 2015-09-30 | 91 | $627.3M | 67 | |
| 2015-06-30 | 96 | $832.7M | 67 | |
| 2015-03-31 | 89 | $593.1M | 77 | |
| 2014-12-31 | 84 | $345.0M | 69 | |
| 2014-09-30 | 100 | $341.5M | 55 | |
| 2014-06-30 | 96 | $337.0M | 60 | |
| 2014-03-31 | 91 | $333.2M | 62 | |
| 2013-12-31 | 84 | $255.7M | 0 |
Rhenman & Partners Asset Management AB's most significant position changes for 2026-03-31: Sold out: Vera Therapeutics INC (VERA); New buy: Stryker CORP (SYK); New buy: Veeva Systems Inc-class A (VEEV); New buy: Abbott Laboratories (ABT); Sold out: Penumbra INC (PEN).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | GILD | Gilead Sciences INC | +1.4% | +32.98% | Add |
| 2 | INSM | Insmed INC | +1.4% | +40.65% | Add |
| 3 | VRTX | Vertex Pharmaceuticals INC | +1% | +26.95% | Add |
| 4 | BIIB | Biogen INC | +1% | +18.14% | Add |
| 5 | GH | Guardant Health INC | +0.9% | +81.25% | Add |
| 6 | ELV | Elevance Health INC | +0.7% | +115.33% | Add |
| 7 | OSCR | Oscar Health INC - Class A | +0.6% | +153.85% | Add |
| 8 | REGN | Regeneron Pharmaceuticals | +0.2% | -21.66% | Trim |
| 9 | COR | Cencora INC | 0% | -17.36% | Trim |
| 10 | NBIX | Neurocrine Biosciences INC | 0% | -19.64% | Trim |
| 11 | MCK | Mckesson CORP | -0.2% | -34.18% | Trim |
| 12 | THC | Tenet Healthcare CORP | -0.2% | -29.42% | Trim |
| 13 | UNH | Unitedhealth Group INC | -0.2% | -17.12% | Trim |
| 14 | GPCR | Structure Therapeutics INC | -0.2% | -13.21% | Trim |
| 15 | ALNY | Alnylam Pharmaceuticals INC | -0.3% | -24.54% | Trim |
| 16 | IONS | Ionis Pharmaceuticals INC | -0.3% | -41.39% | Trim |
| 17 | STOK | Stoke Therapeutics INC | -0.3% | -61.57% | Trim |
| 18 | PRCT | Procept Biorobotics CORP | -0.3% | -22.26% | Trim |
| 19 | NRIX | Nurix Therapeutics INC | -0.4% | -41.67% | Trim |
| 20 | XENE | Xenon Pharmaceuticals INC | -0.4% | -79.86% | Trim |
| 21 | LLY | Eli Lilly & Co | -0.4% | -20.14% | Trim |
| 22 | BTSG | Brightspring Health Services | -0.4% | -74.75% | Trim |
| 23 | ISRG | Intuitive Surgical INC | -0.4% | -23.24% | Trim |
| 24 | ABBV | Abbvie INC | -0.4% | -35.27% | Trim |
| 25 | AMGN | Amgen INC | -0.4% | -57.78% | Trim |
| 26 | NUVL | Nuvalent Inc-a | -0.5% | -50.29% | Trim |
| 27 | KURA | Kura Oncology INC | -0.6% | -68.86% | Trim |
| 28 | AXSM | Axsome Therapeutics INC | -0.6% | -44.43% | Trim |
| 29 | CI | THE Cigna Group | -0.7% | -79.30% | Trim |
| 30 | EHC | Encompass Health CORP | -0.8% | -61.53% | Trim |
| 31 | DOCS | Doximity Inc-class A | -1% | -50.69% | Trim |
| 32 | GKOS | Glaukos CORP | -1.1% | -60.00% | Trim |
| 33 | PODD | Insulet CORP | -1.3% | -77.05% | Trim |
| 34 | ALGN | Align Technology INC | -1.3% | -92.42% | Trim |
| 35 | MDT | Medtronic plc | -1.7% | -69.59% | Trim |
| 36 | DHR | Danaher CORP | -1.7% | -81.78% | Trim |
| 37 | COO | Cooper Cos Inc/the | -2.1% | -84.73% | Trim |
| 38 | VERA | Vera Therapeutics INC | — | EXIT | Sold out |
| 39 | SYK | Stryker CORP | — | NEW | New buy |
| 40 | VEEV | Veeva Systems Inc-class A | — | NEW | New buy |
| 41 | ABT | Abbott Laboratories | — | NEW | New buy |
| 42 | PEN | Penumbra INC | — | EXIT | Sold out |
| 43 | APLSUSD | Apellis Pharmaceuticals INC | — | EXIT | Sold out |
| 44 | ACLXGBX | Arcellx INC | — | EXIT | Sold out |
| 45 | WAY | Waystar Holding CORP | — | NEW | New buy |
| 46 | BRKR | Bruker CORP | — | EXIT | Sold out |
| 47 | APGE | Apogee Therapeutics INC | — | NEW | New buy |
| 48 | CAH | Cardinal Health INC | — | NEW | New buy |
| 49 | NKTR | Nektar Therapeutics | — | NEW | New buy |
| 50 | RYTM | Rhythm Pharmaceuticals INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-13 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-13 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-13 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-13 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-13 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-13 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-13 | Amendment | View on EDGAR |
| 2023-09-30 | 2023-11-09 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-12 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-13 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-12 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-11 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-01-19 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-16 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-16 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-01-17 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-16 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-22 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-11 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-05 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-03 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-20 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-04-11 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-19 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-10-13 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-11 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-19 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-01-13 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-08 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-01 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-04-19 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-01-19 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-26 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-30 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-13 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-09 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-03 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-07-31 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-14 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
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