iShares Russell Mid-Cap ETF (IWR) is an ETF managed by BlackRock / iShares. Its largest position is BLACKROCK FUNDS III (BISXX), representing 2.98% of fund assets.
iShares Russell Mid-Cap ETF Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- IWR
- Type:
- ETF
- Manager:
- BlackRock / iShares
- Total Assets:
- —
- Report Date:
- Mar 31, 2026
- Filing Date:
- May 28, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
BLACKROCK FUNDS III
|
2.98% | $1,437,599,317.50 | 1,437,311,855 |
|
-
CORNING INC /NY
|
0.84% | $405,617,545.80 | 2,983,140 |
|
-
Vertiv Holdings Co
|
0.76% | $364,257,371.06 | 1,453,657 |
|
-
Howmet Aerospace Inc.
|
0.73% | $353,079,469.44 | 1,532,064 |
|
-
WESTERN DIGITAL CORP
|
0.73% | $351,620,229.62 | 1,299,938 |
|
-
Sandisk Corp
|
0.72% | $347,185,355.04 | 546,456 |
|
-
Bank of New York Mellon Corp
|
0.65% | $312,121,580.13 | 2,631,051 |
|
-
QUANTA SERVICES, INC.
|
0.64% | $308,935,750.08 | 562,704 |
|
-
VALERO ENERGY CORP/TX
|
0.60% | $286,962,665.28 | 1,161,416 |
|
-
CUMMINS INC
|
0.59% | $282,907,594.62 | 525,831 |
|
-
Marathon Petroleum Corp
|
0.58% | $280,541,087.98 | 1,148,911 |
|
-
Phillips 66
|
0.58% | $280,507,100.50 | 1,539,725 |
|
-
ROYAL CARIBBEAN CRUISES LTD
|
0.55% | $266,403,133.90 | 968,105 |
|
-
Hilton Worldwide Holdings Inc.
|
0.55% | $264,990,516.00 | 871,450 |
|
-
ROSS STORES, INC.
|
0.55% | $263,739,659.58 | 1,217,466 |
|
-
KINDER MORGAN, INC.
|
0.52% | $249,131,018.29 | 7,430,093 |
|
-
Cloudflare, Inc.
|
0.51% | $247,156,940.76 | 1,197,814 |
|
-
L3HARRIS TECHNOLOGIES, INC. /DE/
|
0.51% | $246,285,234.00 | 713,560 |
|
-
Warner Bros. Discovery, Inc.
|
0.51% | $244,365,661.28 | 8,898,968 |
|
-
DIGITAL REALTY TRUST, INC.
|
0.49% | $236,915,779.65 | 1,314,665 |
|
-
Baker Hughes Co
|
0.48% | $231,330,782.10 | 3,789,202 |
|
-
Cheniere Energy, Inc.
|
0.48% | $231,011,286.08 | 814,108 |
|
-
SIMON PROPERTY GROUP INC.
|
0.48% | $230,914,067.38 | 1,237,946 |
|
-
Cencora, Inc.
|
0.46% | $219,791,192.40 | 699,660 |
|
-
Corteva, Inc.
|
0.45% | $216,477,408.40 | 2,586,040 |
|
-
ONEOK INC /NEW/
|
0.45% | $215,821,129.74 | 2,387,666 |
|
-
REALTY INCOME CORP
|
0.44% | $214,054,259.16 | 3,498,762 |
|
-
CIENA CORP
|
0.43% | $209,222,582.22 | 538,914 |
|
-
ALLSTATE CORP
|
0.43% | $206,564,548.40 | 996,260 |
|
-
FASTENAL CO
|
0.42% | $203,538,008.00 | 4,386,595 |
|
-
Targa Resources Corp.
|
0.42% | $203,508,013.26 | 811,662 |
|
-
Robinhood Markets, Inc.
|
0.42% | $200,892,938.40 | 2,898,888 |
|
-
ELECTRONIC ARTS INC.
|
0.41% | $195,915,808.08 | 960,984 |
|
-
Vistra Corp.
|
0.40% | $194,336,251.23 | 1,292,731 |
|
-
MONOLITHIC POWER SYSTEMS, INC.
|
0.40% | $193,422,361.80 | 176,908 |
|
-
CARDINAL HEALTH INC
|
0.40% | $192,700,773.54 | 911,934 |
|
-
ENTERGY CORP /DE/
|
0.40% | $191,748,744.52 | 1,706,557 |
|
-
EXELON CORP
|
0.39% | $189,365,240.40 | 3,863,020 |
|
-
Lumentum Holdings Inc.
|
0.39% | $189,068,442.12 | 269,037 |
|
-
AMETEK INC/
|
0.39% | $188,730,046.60 | 880,435 |
|
-
AngloGold Ashanti PLC
|
0.39% | $187,008,601.20 | 1,920,795 |
|
-
Keysight Technologies, Inc.
|
0.38% | $185,625,237.71 | 657,383 |
|
-
COMFORT SYSTEMS USA INC
|
0.38% | $183,236,054.23 | 132,877 |
|
-
W.W. GRAINGER, INC.
|
0.38% | $182,224,173.74 | 167,054 |
|
-
XCEL ENERGY INC
|
0.37% | $179,688,593.04 | 2,261,941 |
|
-
TERADYNE, INC
|
0.37% | $177,384,172.86 | 598,341 |
|
-
UNITED RENTALS, INC.
|
0.37% | $176,661,957.36 | 242,481 |
|
-
OCCIDENTAL PETROLEUM CORP /DE/
|
0.36% | $175,216,730.00 | 2,695,642 |
|
-
FORD MOTOR CO
|
0.36% | $172,129,174.42 | 14,915,873 |
|
-
IDEXX LABORATORIES INC /DE
|
0.35% | $171,125,847.06 | 304,554 |
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