# Holder Name Position Position Change $ Market Value % Port % O/S Rpt Date
1 RA Capital Management LP 10,281,496 0 2,671,132,660.8 21.7519 16.4829 03/31/2026
2 T. Rowe Price Investment Management, Inc. 6,506,219 4,838,594 1,690,315,696.2 1.0204 10.4305 04/30/2026
3 Avoro Capital Advisor LLC 5,062,500 -48,611 1,315,237,500 12.8985 8.116 03/31/2026
4 Westfield Capital Management Co. LP 4,813,440 -372,256 1,250,531,712 4.4789 7.7167 03/31/2026
5 Fidelity Management & Research Co. LLC 3,558,086 -243,700 924,390,742.8 0.0461 5.7042 03/31/2026
6 Artisan Partners LP 3,230,188 4,303 839,202,842.4 0.6097 5.1785 03/31/2026
7 Capital Research & Management Co. (International Investors) 1,958,843 -1,105,100 508,907,411.4 0.0909 3.1403 03/31/2026
8 Massachusetts Financial Services Co. 1,801,258 -25,076 467,966,828.4 0.1446 2.8877 03/31/2026
9 Franklin Advisers, Inc. 1,758,323 183,899 456,812,315.4 0.1974 2.8189 03/31/2026
10 Wellington Management Co. LLP 1,710,823 -6,468 444,471,815.4 0.07 2.7427 03/31/2026
11 Perceptive Advisors LLC 1,531,421 450,000 397,863,175.8 6.7395 2.4551 03/31/2026
12 T. Rowe Price Associates, Inc. (IM) 1,530,345 -39,915 397,583,631 0.0441 2.4534 03/31/2026
13 American Century Investment Management, Inc. 1,397,119 -46,022 362,971,516.2 0.1214 2.2398 03/31/2026
14 Capital Research & Management Co. (World Investors) 900,517 900,517 233,954,316.6 0.0208 1.4437 03/31/2026
15 Principal Global Investors LLC 896,397 -130,010 232,883,940.6 0.0991 1.4371 03/31/2026
# Holder Name Position Position Change $ Market Value % Port % O/S Rpt Date
1 T. Rowe Price Capital Appreciation Fund 2,740,767 2,740,767 712,051,266.6 1.3999 4.3939 03/31/2026
2 MFS Mid Cap Growth Fund 1,273,836 -5,902 330,942,592.8 2.431 2.0422 05/31/2026
3 American Funds Growth Fund of America 1,209,675 0 314,273,565 0.0914 1.9393 03/31/2026
4 Franklin DynaTech Fund 1,100,000 100,000 285,780,000 0.9783 1.7635 05/31/2026
5 Vanguard Health Care Fund 1,049,942 -53,527 272,774,931.6 0.6864 1.6832 04/30/2026
6 T Rowe Price Mid Cap Growth Fund 783,400 -700 203,527,320 0.8354 1.2559 03/31/2026
7 T Rowe Price Health Sciences Fund 699,373 -7,746 181,697,105.4 1.4936 1.1212 03/31/2026
8 Artisan Mid Cap Fund 678,343 -26,827 176,233,511.4 5.274 1.0875 03/31/2026
9 American Century Ultra Fund 664,000 0 172,507,200 0.621 1.0645 03/31/2026
10 JNL/T Rowe Price Capital Appreciation Fund 603,319 603,319 156,742,276.2 1.5386 0.9672 03/31/2026
11 Polar Capital Funds Plc - Biotechnology Fund 583,990 233,990 151,720,602 4.0601 0.9362 05/29/2026
12 American Funds Small Cap World Fund 579,165 0 150,467,067 0.1713 0.9285 03/31/2026
13 Fidelity Select Port. - Health Care Portfolio 560,000 -180,000 145,488,000 2.2585 0.8978 05/31/2026
14 Harbor Small Cap Growth Fund 499,143 -65,610 129,677,351.4 5.018 0.8002 04/30/2026
15 Fidelity Select Port. - Biotechnology Portfolio 480,401 -89,300 124,808,179.8 2.1542 0.7702 05/31/2026
# Holder Name Position Position Change $ Market Value % Port % O/S Rpt Date
1 T. Rowe Price Investment Management, Inc. 6,506,219 4,838,594 1,690,315,696.2 1.0204 10.4305 04/30/2026
2 Capital Research & Management Co. (World Investors) 900,517 900,517 233,954,316.6 0.0208 1.4437 03/31/2026
3 Perceptive Advisors LLC 1,531,421 450,000 397,863,175.8 6.7395 2.4551 03/31/2026
4 Polar Capital LLP 651,712 281,239 169,314,777.6 0.3409 1.0448 03/31/2026
5 Vestal Point Capital LP 375,000 200,000 97,425,000 2.3384 0.6012 03/31/2026
6 Franklin Advisers, Inc. 1,758,323 183,899 456,812,315.4 0.1974 2.8189 03/31/2026
7 Pictet Asset Management SA 251,833 178,415 65,426,213.4 0.0402 0.4037 03/31/2026
8 Renaissance Technologies LLC 117,332 117,332 30,482,853.6 0.042 0.1881 03/31/2026
9 Wells Fargo Securities LLC 114,003 114,003 29,617,979.4 0.3882 0.1828 03/31/2026
10 SG Americas Securities LLC 120,790 109,577 31,381,242 0.0292 0.1936 03/31/2026
# Holder Name Position Position Change $ Market Value % Port % O/S Rpt Date
1 Janus Henderson Investors US LLC 0 -3,921,067 0 0 0
2 Capital Research & Management Co. (International Investors) 1,958,843 -1,105,100 508,907,411.4 0.0909 3.1403 03/31/2026
3 Citadel Advisors LLC 0 -496,881 0 0 0
4 Susquehanna Financial Group LLLP 28,062 -442,889 7,290,507.6 0.0083 0.045 03/31/2026
5 Westfield Capital Management Co. LP 4,813,440 -372,256 1,250,531,712 4.4789 7.7167 03/31/2026
6 Fidelity Management & Research Co. LLC 3,558,086 -243,700 924,390,742.8 0.0461 5.7042 03/31/2026
7 Invesco Advisers, Inc. 303,575 -227,411 78,868,785 0.0312 0.4867 03/31/2026
8 Jain Global LLC 17,207 -199,319 4,470,378.6 0.0504 0.0276 03/31/2026
9 DWS Investments (UK) Ltd. 87,487 -166,631 22,729,122.6 0.0083 0.1403 03/31/2026
10 Qube Research & Technologies Ltd. 52,753 -140,711 13,705,229.4 0.0175 0.0846 03/31/2026

Data provided by FactSet Research Systems Inc.