FSLY vs. RNG
FSLY (Fastly, Inc.) and RNG (RingCentral, Inc.) are both stocks. Both operate in the Software - Application industry within the Technology sector. Over the past 5 years, FSLY returned -13.96%/yr vs -26.90%/yr for RNG. Their 0.52 correlation means they have sometimes moved together and sometimes differently.
Performance
FSLY vs. RNG - Performance Comparison
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Returns By Period
In the year-to-date period, FSLY achieves a 122.59% return, which is significantly higher than RNG's 93.23% return.
FSLY
- 1D
- 5.15%
- 1M
- 24.99%
- 6M
- 144.97%
- YTD
- 122.59%
- 1Y
- 256.29%
- 3Y*
- 8.10%
- 5Y*
- -13.96%
- 10Y*
- —
- ALL TIME*
- 0.73%
RNG
- 1D
- 4.00%
- 1M
- 39.02%
- 6M
- 115.63%
- YTD
- 93.23%
- 1Y
- 136.16%
- 3Y*
- 10.34%
- 5Y*
- -26.90%
- 10Y*
- 9.33%
- ALL TIME*
- 9.57%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
FSLY Fastly, Inc. | $87.80M | $95.93M | $146.72M |
| $166.64M | $110.87M | $87.41M |
FSLY vs. RNG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
FSLY Fastly, Inc. | 122.59% | 7.84% | -46.97% | 117.34% | -76.90% | -59.43% | 335.33% | -6.65% |
RNG RingCentral, Inc. | 93.23% | -17.51% | 3.12% | -4.10% | -81.10% | -50.56% | 124.68% | 35.38% |
Correlation
The correlation between FSLY and RNG is 0.24, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.24 |
Correlation (3Y) Balances recent behavior with more history. | 0.44 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.56 |
Correlation (All Time) Calculated using the full available price history since May 17, 2019 | 0.52 |
Over the past year, the correlation between FSLY and RNG has dropped to 0.24 - well below their long-term average of 0.52, suggesting their price drivers have been diverging.
Fundamentals
FSLY:
$3.55B
RNG:
$4.80B
FSLY:
-$0.68
RNG:
$1.25
FSLY:
5.23
RNG:
1.91
FSLY:
$652.57M
RNG:
$2.58B
FSLY:
$382.79M
RNG:
$1.86B
FSLY:
-$22.82M
RNG:
$300.06M
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Return for Risk
FSLY vs. RNG — Risk / Return Rank
FSLY
RNG
FSLY vs. RNG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fastly, Inc. (FSLY) and RingCentral, Inc. (RNG). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| FSLY | RNG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.40 | ||
| Sortino ratioReturn per unit of downside risk | +0.26 | ||
| Omega ratioGain probability vs. loss probability | 1.42 | 1.33 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 4.56 | 4.08 | +0.48 |
| Martin ratioReturn relative to average drawdown | 9.55 | 9.42 | +0.12 |
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Drawdowns
FSLY vs. RNG - Drawdown Comparison
The maximum FSLY drawdown since its inception was -96.12%, roughly equal to the maximum RNG drawdown of -95.15%. Use the drawdown chart below to compare losses from any high point for FSLY and RNG.
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Drawdown Indicators
| FSLY | RNG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -96.12% | -95.15% | -0.97% |
Max Drawdown (1Y)Largest decline over 1 year | -51.60% | -29.32% | -22.28% |
Max Drawdown (3Y)Largest decline over 3 years | -79.99% | -48.57% | -31.42% |
Max Drawdown (5Y)Largest decline over 5 years | -90.81% | -92.36% | +1.55% |
Max Drawdown (10Y)Largest decline over 10 years | — | -95.15% | — |
Current DrawdownCurrent decline from peak | -82.41% | -87.41% | +5.00% |
Average DrawdownAverage peak-to-trough decline | -70.44% | -42.86% | -27.58% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 24.61% | 12.69% | +11.92% |
Volatility
FSLY vs. RNG - Volatility Comparison
The current volatility for Fastly, Inc. (FSLY) is 14.59%, while RingCentral, Inc. (RNG) has a volatility of 28.56%. This indicates that FSLY experiences smaller price fluctuations and is considered to be less risky than RNG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FSLY | RNG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 14.59% | 28.56% | -13.97% |
Volatility (6M)Calculated over the trailing 6-month period | 98.00% | 59.45% | +38.55% |
Volatility (1Y)Calculated over the trailing 1-year period | 117.88% | 75.16% | +42.72% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 87.43% | 64.53% | +22.90% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 88.82% | 56.51% | +32.31% |
Dividends
FSLY vs. RNG - Dividend Comparison
FSLY has not paid dividends to shareholders, while RNG's dividend yield for the trailing twelve months is around 0.27%.
| Position | TTM |
|---|---|
FSLY Fastly, Inc. | 0.00% |
RNG RingCentral, Inc. | 0.27% |
Financials
FSLY vs. RNG - Financials Comparison
This section allows you to compare key financial metrics between Fastly, Inc. and RingCentral, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
FSLY vs. RNG - Profitability Comparison
FSLY - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Fastly, Inc. reported a gross profit of 108.18M and revenue of 173.02M. Therefore, the gross margin over that period was 62.5%.
RNG - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, RingCentral, Inc. reported a gross profit of 472.31M and revenue of 657.01M. Therefore, the gross margin over that period was 71.9%.
FSLY - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Fastly, Inc. reported an operating income of -23.90M and revenue of 173.02M, resulting in an operating margin of -13.8%.
RNG - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, RingCentral, Inc. reported an operating income of 50.29M and revenue of 657.01M, resulting in an operating margin of 7.7%.
FSLY - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Fastly, Inc. reported a net income of -20.52M and revenue of 173.02M, resulting in a net margin of -11.9%.
RNG - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, RingCentral, Inc. reported a net income of 39.12M and revenue of 657.01M, resulting in a net margin of 6.0%.
Frequently Asked Questions
FSLY and RNG have a correlation of 0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RNG has higher volatility (28.56%) compared to FSLY (14.59%). In terms of maximum drawdown, FSLY dropped -96.12% vs RNG's -95.15%.
FSLY currently has the higher Sharpe Ratio (2.00 vs 1.59), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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