iShares Core S&P Mid-Cap ETF
Tracks S&P MidCap 400
The four numbers that price an ETF.
What the ETF actually owns.
From the most recent SEC N-PORT filing. The top-10 weight tells you how concentrated the fund is — broad-market trackers run 25-30%, single-theme funds often 50-70%.
| # | Holding | Weight | Value (USD) | Asset class |
|---|---|---|---|---|
| 1 | BLACKROCK GLOBAL | 3.68% | $3.91 B | STIV |
| 2 | FTI · TechnipFMC PLC | 0.87% | $926 M | EC |
| 3 | CASY · Casey'S General Stores Inc. | 0.84% | $893 M | EC |
| 4 | UTHR · United Therapeutics Corporation | 0.80% | $845 M | EC |
| 5 | CW · Curtiss-Wright Corp. | 0.78% | $831 M | EC |
| 6 | FLEX · FLEX LTD | 0.75% | $797 M | EC |
| 7 | XPO · XPO Inc | 0.71% | $755 M | EC |
| 8 | WWD · Woodward Inc. | 0.67% | $706 M | EC |
| 9 | RGLD · Royal Gold, Inc. | 0.64% | $683 M | EC |
| 10 | USFD · US Foods Holding Corp | 0.63% | $673 M | EC |
| 11 | BURL · Burlington Stores Inc. | 0.63% | $670 M | EC |
| 12 | ATI · ATI Inc | 0.62% | $654 M | EC |
| 13 | MTZ · Mastec, Inc. | 0.62% | $653 M | EC |
| 14 | CRS · Carpenter Technology Corporation | 0.61% | $650 M | EC |
| 15 | NVT · NVent Electric PLC | 0.60% | $632 M | EC |
| 16 | TWLO · Twilio Inc | 0.60% | $632 M | EC |
| 17 | ILMN · Illumina Inc | 0.59% | $624 M | EC |
| 18 | BWXT · BWX Technologies Inc. | 0.58% | $619 M | EC |
| 19 | FN · Fabrinet | 0.58% | $619 M | EC |
| 20 | PSTG · Everpure Inc. | 0.58% | $614 M | EC |
| 21 | NXT · NEXTPOWER INC | 0.56% | $593 M | EC |
| 22 | ENTG · Entegris Inc | 0.56% | $590 M | EC |
| 23 | RBA · RB Global Inc | 0.56% | $589 M | EC |
| 24 | AA · Alcoa Corporation | 0.54% | $569 M | EC |
| 25 | RBC · RBC Bearings Inc | 0.54% | $569 M | EC |
What we measure and what we leave out.
Data sources: SEC EDGAR N-PORT filings (holdings + filing-date timestamp); issuer fact sheets for expense ratio + AUM + inception; Yahoo Finance for daily NAV.
Expense ratio is the single biggest forward predictor of long-horizon performance. A 0.03% expense ratio compounds to a fundamentally different outcome than a 0.95% expense ratio over 25 years — even if the underlying index is identical.
Concentration risk lives in the top-10 weight. For broad-market trackers (VOO, VTI, SPY) the top-10 sits around 28-32%. For thematic funds — semiconductors, AI, cannabis — top-10 often crosses 60%. A "sector tilt" with 60% in 10 names is closer to active stock-picking than passive index exposure.
LRS + tax for Indian investors: US-listed ETFs are securities for Indian-tax purposes — held > 24 months = LTCG @ 12.5%, ≤ 24 months = slab-rate STCG. Distributions are dividends taxed at slab rates (US withholds 25%, creditable via DTAA). LRS USD 250,000 / FY cap applies to each remittance.
India-listed alternative: for S&P 500 / NASDAQ-100 exposure without LRS friction, see India-listed ETFs at /etfs/ (Motilal Oswal, Mirae, Nippon, etc. variants). Higher TER but no LRS hassle and INR-settled.
What this page does not model: tracking error vs underlying index, premium/discount to NAV, bid-ask spread on-exchange, currency-hedged variants (e.g. JPST-hedged), securities lending revenue (which subsidises some expense ratios).
ETF NAVs, tracking error and AUM are computed from AMFI disclosures. ETFs are subject to market risk and tracking-error risk. MintByte is an AMFI-registered mutual fund distributor (ARN-314872). MintByte does not issue buy/sell recommendations on specific securities — the site is an educational data and analytics platform. Not investment advice. Methodology · How we earn.