Baker Bros. Advisors L.P. 13F annual report

Baker Bros. Advisors L.P. is an investment fund managing more than $17.2 trillion ran by Alexandra Toohey. There are currently 99 companies in Mrs. Toohey’s portfolio. The largest investments include Seagen Inc and BeiGene Ltd, together worth $11.6 trillion.

Limited to 30 biggest holdings

$17.2 trillion Assets Under Management (AUM)

As of 7th November 2023, Baker Bros. Advisors L.P.’s top holding is 44,554,162 shares of Seagen Inc currently worth over $9.45 trillion and making up 54.9% of the portfolio value. Relative to the number of outstanding shares of Seagen Inc, Baker Bros. Advisors L.P. owns more than 0.2% of the company. In addition, the fund holds 11,668,897 shares of BeiGene Ltd worth $2.1 trillion, whose value fell approximately 0.1% in the past six months. The third-largest holding is Incyte worth $2.09 trillion and the next is Acadia Pharmaceuticals Inc worth $893 billion, with 42,864,612 shares owned.

Currently, Baker Bros. Advisors L.P.'s portfolio is worth at least $17.2 trillion. The total portfolio value may be much higher due to cash assets that are not publicly disclosed such as fixed income, real estate, or cash equivalents.

Careers at Baker Bros. Advisors L.P.

The Baker Bros. Advisors L.P. office and employees reside in New York, New York. According to the last 13-F report filed with the SEC, Alexandra Toohey serves as the Chief Financial Officer at Baker Bros. Advisors L.P..

Recent trades

In the most recent 13F filing, Baker Bros. Advisors L.P. revealed that it had opened a new position in Immunovant Inc and bought 425,009 shares worth $16.3 billion. This means they effectively own approximately 0.1% of the company. Immunovant Inc makes up approximately 0.1% of the fund's Health Care sector allocation and has grown its share price by 159.9% in the past year.

The investment fund also strengthened its position in Incyte by buying 510 additional shares. This makes their stake in Incyte total 36,178,566 shares worth $2.09 trillion. Incyte dropped 31.1% in the past year.

On the other hand, there are companies that Baker Bros. Advisors L.P. is getting rid of from its portfolio. Baker Bros. Advisors L.P. closed its position in Chinook Therapeutics on 14th November 2023. It sold the previously owned 1,455,202 shares for $55.9 billion. Alexandra Toohey also disclosed a decreased stake in Argenx Se by 0.5%. This leaves the value of the investment at $74.3 billion and 151,215 shares.

One of the largest hedge funds

The two most similar investment funds to Baker Bros. Advisors L.P. are Epoch Investment Partners and Harding Loevner L.P.. They manage $17.2 trillion and $17.1 trillion respectively.


Alexandra Toohey investment strategy

Baker Bros. Advisors L.P.’s portfolio is diversified across 2 sectors. Currently, their heaviest sector is Health Care — making up 95.9% of the total portfolio value. The fund focuses on investments in the United States as 60.6% of the portfolio companies are based in the United States.

The majority of the companies in the fund’s portfolio are small-cap stocks. Stocks with a size of more than $100 million in market cap make up 8% of the total holdings value. On the other hand, large-cap stocks make up only 4.0% of the portfolio. The average market cap of the portfolio companies is close to $2.25 billion.

The complete list of Baker Bros. Advisors L.P. trades based on 13F SEC filings

These positions were updated on November 14th based on the fund’s latest 13F filing. Quickly find out what the most recently closed or increased positions are.

Security Shares Owned Value Allocation
Seagen Inc
No change
44,554,162
$9,452,165,468,000 54.91%
BeiGene Ltd
No change
11,668,897
$2,098,884,503,000 12.19%
Incyte Corp.
0.00%
36,178,566
$2,090,035,758,000 12.14%
Acadia Pharmaceuticals Inc
No change
42,864,612
$893,298,514,000 5.19%
Biomarin Pharmaceutical Inc.
No change
3,810,248
$337,130,743,000 1.96%
Madrigal Pharmaceuticals Inc
No change
1,545,113
$225,648,303,000 1.31%
Rhythm Pharmaceuticals Inc.
3.14%
6,702,349
$153,651,351,000 0.89%
Roivant Sciences Ltd.
25.97%
11,877,171
$138,725,357,000 0.81%
Immunocore Holdings Plc
No change
2,520,731
$130,825,939,000 0.76%
Akero Therapeutics Inc
No change
2,368,378
$119,792,559,000 0.70%
AbCellera Biologics Inc.
26.22%
20,763,323
$95,511,286,000 0.55%
Biocryst Pharmaceuticals Inc.
No change
12,710,818
$89,992,591,000 0.52%
Replimune Group Inc
No change
4,578,280
$78,334,371,000 0.46%
Entrada Therapeutics, Inc.
No change
4,865,819
$76,879,940,000 0.45%
Revolution Medicines Inc
No change
2,691,493
$74,500,526,000 0.43%
Argenx Se
46.03%
151,215
$74,341,830,000 0.43%
SpringWorks Therapeutics, Inc.
No change
2,999,846
$69,356,440,000 0.40%
Kymera Therapeutics, Inc.
8.57%
4,750,400
$66,030,560,000 0.38%
Immatics N.v.
No change
5,640,816
$65,320,649,000 0.38%
Mirati Therapeutics Inc
No change
1,409,784
$61,410,191,000 0.36%
Chinook Therapeutics, Inc.
Closed
1,455,202
$55,908,861,000
Kiniksa Pharmaceuticals Ltd
No change
2,809,577
$48,802,352,000 0.28%
Ultragenyx Pharmaceutical Inc.
74.51%
1,366,547
$48,717,401,000 0.28%
Dice Therapeutics, Inc.
Closed
1,035,786
$48,122,618,000
Denali Therapeutics Inc
57.49%
2,292,003
$47,284,022,000 0.27%
Prelude Therapeutics Inc
No change
10,123,824
$31,282,616,000 0.18%
Kodiak Sciences Inc
No change
17,310,490
$31,158,882,000 0.18%
Nurix Therapeutics, Inc.
No change
3,882,125
$30,513,503,000 0.18%
Biomea Fusion, Inc.
No change
2,108,949
$29,019,138,000 0.17%
Immunogen, Inc.
Closed
1,520,097
$28,684,230,000
IDEAYA Biosciences, Inc.
No change
1,062,123
$28,656,079,000 0.17%
Cerus Corp.
7.29%
17,239,501
$27,927,992,000 0.16%
Aerovate Therapeutics, Inc.
No change
1,963,479
$26,644,410,000 0.15%
IGM Biosciences, Inc.
0.02%
3,157,764
$26,367,329,000 0.15%
Xenon Pharmaceuticals Inc
No change
751,639
$25,675,988,000 0.15%
Cabaletta Bio Inc
No change
1,594,000
$24,260,680,000 0.14%
Monte Rosa Therapeutics, Inc.
62.57%
4,916,095
$23,548,095,000 0.14%
Dbv Technologies S.a.
No change
14,614,264
$19,875,399,000 0.12%
Krystal Biotech Inc
No change
169,934
$19,712,344,000 0.11%
Verve Therapeutics, Inc.
No change
1,416,530
$18,783,188,000 0.11%
Bicycle Therapeutics plc
No change
843,814
$16,952,223,000 0.10%
Immunovant Inc
Opened
425,009
$16,316,096,000 0.09%
Cogent Biosciences, Inc.
31.99%
1,292,966
$12,606,419,000 0.07%
Day One Biopharmaceuticals, Inc.
No change
1,000,000
$12,270,000,000 0.07%
Verastem Inc
Closed
1,336,485
$9,943,448,000
Prime Medicine, Inc.
No change
1,028,466
$9,811,566,000 0.06%
2seventy Bio, Inc.
No change
2,497,526
$9,790,302,000 0.06%
Relay Therapeutics, Inc.
No change
1,160,117
$9,756,584,000 0.06%
Pacific Biosciences of California Inc
No change
1,127,782
$9,416,980,000 0.05%
Insmed Inc
No change
343,000
$8,660,750,000 0.05%
Adaptimmune Therapeutics Plc
No change
10,969,282
$8,556,040,000 0.05%
Tango Therapeutics, Inc.
No change
750,000
$8,445,000,000 0.05%
Heron Therapeutics Inc
No change
8,131,678
$8,375,628,000 0.05%
Arvinas Inc
Opened
413,481
$8,120,767,000 0.05%
Fate Therapeutics Inc
Closed
1,671,717
$7,957,373,000
Taysha Gene Therapies, Inc.
Opened
2,504,756
$7,915,029,000 0.05%
Allogene Therapeutics Inc
Closed
1,576,901
$7,837,198,000
Sana Biotechnology, Inc.
No change
2,000,000
$7,740,000,000 0.04%
Bluebird bio Inc
No change
2,499,715
$7,599,134,000 0.04%
Ars Pharmaceuticals, Inc.
No change
2,006,451
$7,584,385,000 0.04%
Sagimet Biosciences Inc.
Opened
815,359
$7,175,159,000 0.04%
Tscan Therapeutics, Inc.
No change
2,784,792
$7,129,068,000 0.04%
Geron Corp.
No change
3,061,224
$6,489,795,000 0.04%
Athira Pharma, Inc.
No change
3,153,807
$6,370,690,000 0.04%
Alector, Inc.
No change
964,851
$6,252,234,000 0.04%
Mirum Pharmaceuticals Inc
Opened
190,476
$6,019,042,000 0.03%
Edgewise Therapeutics, Inc.
109.94%
1,049,699
$6,014,775,000 0.03%
Summit Therapeutics Inc
50.19%
3,140,473
$5,872,685,000 0.03%
Stoke Therapeutics, Inc.
30.25%
1,485,915
$5,854,505,000 0.03%
Hookipa Pharma Inc
82.25%
8,065,398
$4,968,285,000 0.03%
Morphic Holding Inc
Opened
215,800
$4,943,978,000 0.03%
Celcuity Inc
Opened
535,478
$4,894,269,000 0.03%
Neoleukin Therapeutics, Inc.
Opened
1,221,414
$4,824,585,000 0.03%
Aadi Bioscience, Inc.
No change
989,928
$4,791,252,000 0.03%
Macrogenics Inc
Closed
892,579
$4,775,298,000
Mereo BioPharma Group plc
Closed
3,554,979
$4,692,572,000
Opthea Limited
0.02%
2,690,891
$4,687,532,000 0.03%
Natera Inc
No change
100,000
$4,425,000,000 0.03%
Aravive Inc
Closed
3,261,224
$4,109,142,000
Design Therapeutics, Inc.
200.00%
1,500,000
$3,540,000,000 0.02%
Praxis Precision Medicines, Inc.
No change
1,879,915
$3,214,655,000 0.02%
Neoleukin Therapeutics, Inc.
Closed
3,821,740
$3,172,044,000
Compass Therapeutics, Inc.
No change
1,557,630
$3,068,531,000 0.02%
Talis Biomedical Corporation
93.33%
508,323
$2,933,024,000 0.02%
Gracell Biotechnologies Inc.
No change
1,000,000
$2,880,000,000 0.02%
Sera Prognostics, Inc.
14.75%
1,515,342
$2,818,536,000 0.02%
Vaxcyte, Inc.
No change
48,885
$2,492,157,000 0.01%
Xencor Inc
No change
123,127
$2,481,009,000 0.01%
Kala Bio Inc.
129.42%
266,613
$2,372,856,000 0.01%
Vera Therapeutics, Inc.
Closed
146,464
$2,350,747,000
Achilles Therapeutics Plc
No change
2,557,149
$2,326,750,000 0.01%
Century Therapeutics, Inc.
No change
1,149,340
$2,298,680,000 0.01%
Affimed N.V.
32.56%
4,448,644
$2,126,007,000 0.01%
Perspective Therapeutics Inc
229.40%
7,639,703
$2,090,987,000 0.01%
Instil Bio, Inc.
10.80%
4,704,395
$2,013,481,000 0.01%
Pmv Pharmaceuticals Inc
No change
322,024
$1,977,227,000 0.01%
AnaptysBio Inc
86.31%
106,197
$1,907,298,000 0.01%
Point Biopharma Global Inc.
78.62%
249,968
$1,667,287,000 0.01%
iTeos Therapeutics, Inc.
No change
150,346
$1,646,289,000 0.01%
Leap Therapeutics Inc
No change
1,172,175
$1,617,602,000 0.01%
Aligos Therapeutics, Inc.
No change
2,076,400
$1,551,071,000 0.01%
Aeglea BioTherapeutics Inc
Closed
3,410,106
$1,536,253,000
Mersana Therapeutics Inc
No change
1,086,115
$1,379,366,000 0.01%
Vor Biopharma Inc.
No change
633,848
$1,343,758,000 0.01%
Invitae Corp
80.13%
1,764,546
$1,067,903,000 0.01%
Avidity Biosciences, Inc.
79.19%
166,347
$1,061,294,000 0.01%
Atreca Inc
No change
3,532,760
$922,050,000 0.01%
FibroGen Inc
Closed
238,084
$642,827,000
Nkarta, Inc.
Closed
271,329
$594,211,000
Genetron Holdings Limited
No change
455,306
$369,754,000 0.00%
Protara Therapeutics Inc
No change
199,671
$333,451,000 0.00%
Vincerx Pharma, Inc.
Closed
225,579
$293,253,000
Foghorn Therapeutics Inc.
No change
45,027
$225,135,000 0.00%
Surrozen, Inc.
No change
833,333
$34,250,000 0.00%
No transactions found
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