CSG Systems International, Inc. (CSGS) P/E Ratio History
Historical price-to-earnings valuation from 1997 to 2026
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CSGS Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 8, 2026, CSG Systems International, Inc. (CSGS) trades at a price-to-earnings ratio of 40.6x, with a stock price of $80.39 and trailing twelve-month earnings per share of $2.20.
The current P/E is 48% above its 5-year average of 27.3x. Over the past five years, CSGS's P/E has ranged from a low of 16.8x to a high of 42.6x, placing the current valuation at the 90th percentile of its historical range.
Compared to the Technology sector median P/E of 27.7x, CSGS trades at a 47% premium to its sector peers. The sector includes 359 companies with P/E ratios ranging from 0.0x to 184.2x.
The PEG ratio of 23.89 (P/E divided by -35% EPS growth) suggests the stock may be expensive relative to its earnings growth. Peter Lynch popularized the rule that a PEG below 1.0 indicates an attractive entry point.
Relative to the broader market, CSGS commands a significant premium over the S&P 500 median P/E of 25.1x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our CSGS DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
CSGS P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $15B | 2107.2 | - | -95% | |
| $1B | 10.6Lowest | 1.18Best | +27%Best | |
| $11B | 23.4 | 2.32 | +19% | |
| $3B | 123.3 | 9.99 | -60% | |
| $7B | 12.9 | 2.03 | +19% | |
| $19B | 23.4 | - | +25% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
CSGS Historical P/E Data (1997–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q1 | $79.94 | $2.25 | 35.5x | +58% | |
| FY2025 Q4 | Wed Dec 31 2025 00:00:00 GM | $76.69 | $1.99 | 38.5x | +72% |
| FY2025 Q3 | $64.38 | $2.95 | 21.8x | -3% | |
| FY2025 Q2 | Mon Jun 30 2025 00:00:00 GM | $65.31 | $2.89 | 22.6x | +1% |
| FY2025 Q1 | Mon Mar 31 2025 00:00:00 GM | $60.47 | $2.93 | 20.6x | -8% |
| FY2024 Q4 | $51.11 | $3.04 | 16.8x | -25% | |
| FY2024 Q3 | Mon Sep 30 2024 00:00:00 GM | $48.65 | $2.27 | 21.4x | -5% |
| FY2024 Q2 | Sun Jun 30 2024 00:00:00 GM | $41.17 | $2.22 | 18.5x | -17% |
| FY2024 Q1 | Sun Mar 31 2024 00:00:00 GM | $51.54 | $2.19 | 23.5x | +5% |
| FY2023 Q4 | Sun Dec 31 2023 00:00:00 GM | $53.21 | $2.19 | 24.3x | +8% |
| FY2023 Q3 | Sat Sep 30 2023 00:00:00 GM | $51.12 | $2.41 | 21.2x | -6% |
| FY2023 Q2 | Fri Jun 30 2023 00:00:00 GM | $52.74 | $2.19 | 24.1x | +7% |
Average P/E for displayed period: 22.5x
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Start ComparisonCSGS — Frequently Asked Questions
Quick answers to the most common questions about buying CSGS stock.
Is CSGS stock overvalued or undervalued?
CSGS trades at 40.6x P/E, above its 5-year average of 27.3x. The 90th percentile ranking indicates a premium to historical valuation.
How does CSGS's valuation compare to peers?
CSG Systems International, Inc. P/E of 40.6x compares to sector median of 27.7x. The premium reflects expected growth above peers.
What is CSGS's PEG ratio?
CSGS PEG ratio is 23.89. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 1997-2026.