BIIBNEUTRAL

BIIB PEG Ratio Analysis

0.70x

Updated 1037h ago·SEC filings & market data

Key Takeaway

The PEG ratio divides a stock’s price-to-earnings (P/E) ratio by its expected earnings growth rate, so a value below 1.0x typically indicates the stock is undervalued relative to its growth.

Sector Performance

46th percentile

BIIB

0.70x

Sector Median

0.77x

Sector Avg

2.65x

Prior Period

0.56x(Jun 2026)

↓ Declining

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Deep Analysis

The PEG ratio divides a stock’s price-to-earnings (P/E) ratio by its expected earnings growth rate, so a value below 1.0x typically indicates the stock is undervalued relative to its growth.

At 0.70x, BIIB’s PEG is below the sector median of 0.92x and sits at the 41st percentile among peers, meaning it is cheaper than most comparable companies. The year-over-year change is not available, but the quarter-over-quarter change shows a +25.0% increase from the prior quarter’s 0.56x, indicating the metric is rising. Although the current low level suggests potential undervaluation, the upward trend means the stock is becoming relatively more expensive vs. expected growth, which can imply reduced margin of safety. This combination of a below-median PEG with a rising trend supports the overall NEUTRAL verdict, as the valuation opportunity is partly offset by the recent climb in the ratio.