FSLY Stock Surges 129% With A 6-day Winning Spree On Record Q4 Earnings
Fastly (FSLY) – a edge cloud platform for processing and securing applications – hit a 6-day winning streak, with cumulative gains over this period amounting to 129%. The company’s market cap has surged by about $1.5 Bil over the last 6 days and currently stands at $2.7 Bil.
The stock has YTD (year-to-date) return of 79.4% compared to -0.1% for S&P 500. This calls for a re-evaluation of the stock’s valuation to find out whether this is an opportunity or a trap.
What Triggered The Rally?
[1] Record Q4 2025 Earnings & Strong 2026 Guidance
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- Adjusted EPS of $0.12 doubled estimates
- Revenue beat consensus by over $11M
- Impact: Stock surged over 70% in one day, Massive spike in trading volume
[2] Multiple Analyst Price Target Hikes
- RBC, Piper Sandler, and Citigroup raised targets
- Emerging narrative as an “underrated AI play”
- Impact: Sustained upward price momentum, Increased institutional interest
Opportunity or Trap?
Below is our take on valuation.
There is a near-equal mix of good and bad in FSLY stock given its overall Moderate operating performance and financial condition. But keeping in mind its Very High valuation, we think that the stock is Unattractive (For details, see Buy or Sell FSLY).
But here is the real interesting point.
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Returns vs S&P 500
The following table summarizes the return for FSLY stock vs. the S&P 500 index over different periods, including the current streak:
| Return Period | FSLY | S&P 500 |
|---|---|---|
| 1D | 13.8% | 0.0% |
| 6D (Current Streak) | 129.4% | 0.6% |
| 1M (21D) | 98.4% | -1.3% |
| 3M (63D) | 53.4% | -0.2% |
| YTD 2026 | 79.4% | -0.1% |
| 2025 | 7.8% | 16.4% |
| 2024 | -47.0% | 23.3% |
| 2023 | 117.3% | 24.2% |
However, big gains can follow sharp reversals – but how has FSLY behaved after prior drops? See FSLY Dip Buyer Analysis to learn more.
Gains and Losses Streaks: S&P 500 Constituents
There are currently 81 S&P constituents with 3 days or more of consecutive gains and 44 constituents with 3 days or more of consecutive losses.
| Consecutive Days | # of Gainers | # of Losers |
|---|---|---|
| 3D | 23 | 18 |
| 4D | 25 | 14 |
| 5D | 13 | 9 |
| 6D | 11 | 2 |
| 7D or more | 9 | 1 |
| Total >=3 D | 81 | 44 |
Key Financials for Fastly (FSLY)
Last 2 Fiscal Years:
| Metric | FY2023 | FY2024 |
|---|---|---|
| Revenues | $506.0 Mil | $543.7 Mil |
| Operating Income | $-193.7 Mil | $-154.1 Mil |
| Net Income | $-133.1 Mil | $-158.1 Mil |
Last 2 Fiscal Quarters:
| Metric | 2025 FQ2 | 2025 FQ3 |
|---|---|---|
| Revenues | $148.7 Mil | $158.2 Mil |
| Operating Income | $-36.5 Mil | $-28.8 Mil |
| Net Income | $-37.5 Mil | $-29.5 Mil |
While FSLY stock looks attractive given its winning streak, investing in a single stock without detailed, thorough analysis can be risky. The Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 — the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.