Concentration Risk High as Top Two Stocks Steer U.S. Communication Services ETF Performance

The communication services sector is a concentration bet dressed up as diversification. After the 2018 GICS reshuffle pulled Meta, Alphabet, Netflix, and Disney out of technology and consumer discretionary, the sector became dominated by a handful of mega-cap platforms sitting alongside legacy telecom and traditional media. Anyone buying a passive sector fund here is mostly buying that top-heavy structure, and the math of the index reflects it.

Fidelity MSCI Communication Services Index ETF (NYSEARCA:FCOM) tracks the MSCI USA IMI Communication Services 25/50 Index, a cap-weighted benchmark with single-issuer caps that prevent any one stock from dominating outright. Shares are around $74 today, sitting in the upper half of the 12-month range.

What This Fund Is Really Doing in a Portfolio

FCOM’s job is to deliver cheap, passive exposure to a specific basket of cash-flow engines: digital advertising platforms, streaming and interactive media, and U.S. wireless carriers. The return engine breaks into three pieces. The largest component is platform advertising, where free cash flow scales with global ad budgets and AI-driven engagement gains. The second is subscription media, including streaming and gaming, where pricing power and content libraries drive margins. The third is telecom, which contributes steady dividend yield and capital-return discipline rather than growth.

For an investor who already owns a broad U.S. index fund, FCOM functions as a tilt rather than a core holding. It overweights the same names that already sit at the top of the S&P 500, which is the central tradeoff to understand before adding it.

Performance Versus the Pitch

The numbers have been kind to recent buyers. FCOM returned roughly 33% over the trailing year, climbed about 12% in the past month alone, and is sitting on a ten-year total return near 208%. The five-year figure tells a more complicated story at about 46%, which captures the brutal 2022 drawdown when ad spending and streaming valuations both compressed.

That five-year number is the one to internalize. A sector fund that lagged the broad market for an extended stretch and then ripped higher is doing exactly what concentrated cap-weighted exposure tends to do: long stretches of underperformance punctuated by sharp catch-up moves when the largest names re-rate. The fund is delivering its strategic promise. Whether that promise beats simply owning the total market depends entirely on which window you measure.

The Real Tradeoffs

1. Concentration in two stocks. Meta and Alphabet together typically drive the majority of the index’s daily movement. Owning FCOM is closer to owning a pair trade with a telecom hedge than a diversified sector basket.
2. Ad-cycle sensitivity. Communication services revenue is tied to discretionary services spending, which is showing strain. University of Michigan consumer sentiment fell to 53.3 in March 2026, deep in pessimistic territory and approaching recessionary readings below 60. Recreation spending slipped from $859.0 billion to $851.4 billion month over month, an early signal that ad budgets and streaming upgrades could tighten.
3. Rate sensitivity on the platform names. With the 10-year Treasury near 4%, sitting at the 79th percentile of its 12-month range, long-duration growth multiples remain exposed if yields push higher.

FCOM works as a 3% to 7% satellite position for investors who want explicit overweight exposure to digital advertising and streaming cash flows and accept that they are doubling up on names already heavily represented in any S&P 500 holding. The primary risk is that a sector this concentrated moves on the earnings of two companies, and a stumble at either one will show up immediately in the fund’s NAV.