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Holdings (Monthly) Guide ↗

BlackRock Health Sciences Opportunities Portfolio

· BlackRock Funds
Monthly Holdings $6.0B AUM 25 positions Period May 2026 Filed Jul 27, 2026 EDGAR ↗ ← All Funds
All 44 New 25 Added 25 Reduced 20 Exited · May 2026 vs Feb 2026
# Name Ticker Since Shares Shares Δ Value Val Δ% % Port Cat
1 UNITEDHEALTH GROUP INC UNH Feb 2026 947,412 +269,501 $360.3M +81.2% 6.10% EC
2 MERCK & COMPANY INC MRK Feb 2026 2,456,466 +584,660 $291.6M +25.8% 4.94% EC
3 GILEAD SCIENCES INC GILD Feb 2026 1,841,333 +104,911 $247.5M -4.3% 4.19% EC
4 AMGEN INC AMGN Feb 2026 590,203 +2,045 $198.8M -12.9% 3.37% EC
5 THERMO FISHER SCIENTIFIC INC TMO Feb 2026 362,337 +77,051 $178.5M +20.0% 3.02% EC
6 VERTEX PHARMACEUTICALS INC VRTX Feb 2026 361,907 +88,589 $162.0M +19.3% 2.74% EC
7 PFIZER INC PFE Feb 2026 5,899,018 +4,714,396 $154.4M +371.5% 2.61% EC
8 BOSTON SCIENTIFIC CORP BSX Feb 2026 1,945,032 +660,670 $94.0M -4.8% 1.59% EC
9 ELEVANCE HEALTH INC ELV Feb 2026 234,947 +146,342 $92.4M +225.8% 1.56% EC
10 ASTRAZENECA PLC AZN Feb 2026 384,355 +236,566 $71.4M +1.5% 1.21% EC
11 BLACKROCK FUNDS III BISXX Feb 2026 59,490,958 +2,055,537 $59.5M +3.6% 1.01% STIV
12 REVOLUTION MEDICINES INC RVMD Feb 2026 361,340 +58,345 $56.9M +84.1% 0.96% EC
13 HUMANA INC HUM Feb 2026 178,205 +99,512 $54.4M +263.0% 0.92% EC
14 COGENT BIOSCIENCES INC COGT Feb 2026 1,406,858 +586,439 $49.2M +54.3% 0.83% EC
15 CYTOKINETICS INC CYTK Feb 2026 575,188 +390,411 $44.2M +284.0% 0.75% EC
16 INSMED INC INSM Feb 2026 392,149 +90,796 $41.9M -6.8% 0.71% EC
17 CVS HEALTH CORP CVS Feb 2026 459,705 +100,423 $41.8M +45.7% 0.71% EC
18 APOGEE THERAPEUTICS INC APGE Feb 2026 263,702 +60,752 $21.7M +52.5% 0.37% EC
19 NEUROCRINE BIOSCIENCES INC NBIX Feb 2026 113,005 +34,284 $17.9M +71.8% 0.30% EC
20 DIANTHUS THERAPEUTICS INC DNTH Feb 2026 186,482 +78,449 $17.3M +190.9% 0.29% EC
21 ORUKA THERAPEUTICS INC ORKA Feb 2026 264,813 +79,798 $15.5M +143.5% 0.26% EC
22 ARCUS BIOSCIENCES INC RCUS Feb 2026 572,430 +116,888 $14.5M +56.3% 0.25% EC
23 INTELLIA THERAPEUTICS INC NTLA Feb 2026 664,846 +146,454 $9.4M +31.0% 0.16% EC
24 VAXCYTE INC PCVX Feb 2026 147,352 +59,812 $7.6M +40.1% 0.13% EC
25 METTLER-TOLEDO INTERNATIONAL INC MTD Feb 2026 6,058 +1,464 $7.2M +13.9% 0.12% EC