Iridium Communications Inc. (IRDM) vs Zillow Group, Inc. Class C (Z)

A side-by-side comparison of Iridium Communications Inc. and Zillow Group, Inc. Class C across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of August 14, 2026. Differences are shown without an overall score or investment verdict.

Compare

Total returnIRDM vs Z

growth of $100 · dividends reinvested · last 10y
IRDM +524.0% (+20.1%/yr)Z +1.0% (+0.1%/yr)IRDM compounded faster over this window
Log scale — wide-divergence pair
101001kStart $10020182020202220242026$624$101
IRDM Z

IRDM vs Z: by the numbers

  • Z is the larger company ($8.36B vs $5.32B market cap).
  • IRDM trades at the lower trailing earnings multiple (56.57 vs 162.61 P/E), one valuation lens rather than an overall verdict.
  • IRDM converts more revenue to profit (10.55% vs 1.96% net margin).
  • Z grew revenue faster over the past five years (9.73% vs 8.27% CAGR).
  • IRDM pays a dividend (1.21% yield), while Z has no payments in the available dividend history.

Metrics side by side

Valuation

MetricIRDMZ
P/E ratio56.57162.61
Forward P/E48.52N/A
P/S ratio6.112.91
P/B ratio11.431.90
EV / EBITDA16.4828.88
FCF yield5.34%3.05%

Profitability

MetricIRDMZ
Gross margin70.39%72.88%
Operating margin23.76%0.43%
Net margin10.55%1.96%
ROE19.74%1.28%
ROIC7.83%-0.55%

Dividends

MetricIRDMZ
Dividend yield1.21%N/A
Payout ratio56.07%N/A

Growth (annualized)

MetricIRDMZ
Revenue CAGR (5Y)8.27%9.73%
FCF CAGR (5Y)4.45%-5.73%
Total return CAGR (5Y)5.51%-17.92%

Frequently asked

Which has the lower trailing P/E, IRDM or Z?
IRDM has the lower trailing P/E: IRDM trades at 56.57 and Z at 162.61. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, IRDM or Z?
Over the past five years, Z grew revenue faster — IRDM at a 8.27% CAGR versus Z at 9.73%.
Does IRDM or Z pay a bigger dividend?
IRDM pays a dividend (1.21% yield), while Z has no payments in the available dividend history.
Is IRDM or Z more profitable?
IRDM runs the higher net margin — IRDM at 10.55% versus Z at 1.96%.
How have IRDM and Z total returns compared?
Over the past 10 years, IRDM delivered 20.09% and Z delivered 0.20% annualized total return. Past performance doesn't predict future results.

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified August 14, 2026.