Investors face a stark valuation contrast between Space Exploration Technologies Corp (SPCX) and Tesla Inc (TSLA). On headline metrics, SpaceX presents higher gross margins and more upside in analyst models, but it also carries large negative levered free cash flow and a deeply negative net margin. Tesla, by contrast, posts positive levered free cash flow and a more substantial operating base, yet the company sits on a very high price-to-earnings multiple that leaves little margin for error.
Snapshot of market prices and modeled upside
All figures are as of Sep 8, 2026 at 1:43 PM EDT, except operating metrics, which are as of Jun 30, 2026.
| Asset | Price | Market cap | P/E | Fair-value upside | Analyst upside |
|---|---|---|---|---|---|
| Space Exploration Technologies Corp (SPCX) | $147.95 | $2.01T | -233.2x | -24.3% | 48.7% |
| Tesla Inc (TSLA) | $354.08 | $1.40T | 382.1x | -29.0% | 15.8% |
Operating economics
- Space Exploration Technologies Corp (SPCX): Revenue $23.04B; Gross margin 51.9%; Net margin -35.7%; Levered FCF -$32.52B.
- Tesla Inc (TSLA): Revenue $103.62B; Gross margin 18.9%; Net margin 3.7%; Levered FCF $5.76B.
SpaceX's business mix reads more like infrastructure, which supports a substantially higher gross margin. That profile creates significant optionality if monetization and scale progress as analysts expect. Nevertheless, a -$32.52B levered free cash flow figure and a -35.7% net margin leave the valuation contingent on future execution rather than current cash generation.
Tesla shows lower gross profitability, but it converts a sizable revenue base into positive cash flow. The company therefore carries a firmer earnings anchor today. The counterpoint is the market's assignment of a 382.1x P/E, which compresses the margin for execution missteps.
Price behavior and the pairs-trade question
Looking at the six-month price series over a recent interval yields the following moves:
- SpaceX: $160.95 on Jun 12 → $147.95 on Sep 8, about -8.1%.
- Tesla: $406.43 on Jun 12 → $354.08 on Sep 8, about -12.9%.
Both names sold off in parts of July and staged recoveries in August, implying a degree of shared exposure to market risk appetite. Intraday quoted moves in the source data also show TSLA +3.49% and SPCX +3.36% at certain snapshots. However, similar directional moves do not by themselves demonstrate a robust statistical relationship that would support a pairs-trade.
For a pairs strategy to be viable, investors need a stable relative behavior - a consistent correlation or a cointegrating relationship - so that one security can reliably hedge exposure in the other. That condition is not satisfied here. The comparison is complicated by several structural differences between the companies: divergent revenue models, distinct capital intensity and reporting histories, and a noteworthy feature that SpaceX's displayed market value exceeds Tesla's despite materially lower revenue and negative cash flow.
Valuation tension
The market and analysts are sending mixed signals. SpaceX shows the larger analyst upside, yet its fair-value model produces a negative upside. Tesla has the deeper current earnings and positive cash flow, but its 382.1x P/E suggests the market is pricing in a high level of future success. Both companies are marked as overvalued by current fair-value frameworks, with Tesla appearing slightly more stretched.
Conclusions and practical takeaways
Summarizing the read on each company:
- Better value (narrow): Tesla. The company benefits from positive levered free cash flow, a larger operating base and measurable earnings today.
- Better optionality: SpaceX. It carries a higher gross margin and greater analyst upside, but those attributes hinge on substantial future execution to justify current market pricing.
- Pairs-trade verdict: Not confirmed. Recent price action has been directionally similar, but available series and structural differences do not establish a reliable correlation coefficient or cointegration. Using Tesla as a hedge for SpaceX introduces substantial basis risk.
Investors considering exposure to either stock should weigh the trade-off between SpaceX's optionality and Tesla's present cash-flow foundation while recognizing that both currently appear expensive in fair-value terms.