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AltaGas (ATGFF, Gas Utilities) Stock Valuation & Fair Value Trading above fair value

AltaGas (ATGFF, Gas Utilities) trades at a blended P/E of 21.9, about 15% above its historical normal valuation, with a forward growth estimate of 10.3% and a PEG of 2.12. Analysts' one-year estimates have been hit 55% of the time.

DATA AS OF 2026-09-21
Blended P/E
21.9
Normal P/E
19.0
PEG
2.12
Fwd growth
10.3%
Div yield
2.3%
RSI (14)
51.9
Neutral
Technical context
  • Price $38.20 at the 2026-09-23 close, 0.6% above the 20-day average ($37.97) and 0.4% below the 50-day ($38.36).
  • RSI (14) at 51.9.
  • 52-week range $27.95 to $40.36: the price is 5.4% below the high and 36.7% above the low.

Valuation flags

Verdict history

tickerseer's rating has been trading above fair value since 2026-09-19.

Blended P/E and rating by weekBlended P/E moved from 21.9 to 21.9 between 2026-09-19 and 2026-09-21, against a normal P/E of 19.0, with 0 rating changes over 2 recorded weeks.2026-09-19: P/E 21.9, Trading above fair value (recalculated)2026-09-21: P/E 21.9, Trading above fair value20.021.0Sep 19Sep 20Sep 21Normal P/E 19.0
Attractively valuedFairly valuedAbove fair valueLarger dot: a stronger reading

Ratings recorded live since 2026-09-21. Earlier points apply today's valuation rules to the metrics tickerseer archived that week.

WeekBlended P/EPremium to normal P/ERating
2026-09-19P/E 21.9+15%Trading above fair value
2026-09-21P/E 21.9+15%Trading above fair value ← now

Frequently asked questions

Is AltaGas stock overvalued?

At a blended P/E of 21.9 versus its historical normal P/E of 19.0, AltaGas trades about 15% above its typical valuation, with a PEG of 2.12 on 10.3% forward growth. tickerseer currently rates it trading above fair value.

What is AltaGas's fair value and PEG?

AltaGas trades at a blended P/E of 21.9 against a historical normal P/E of 19.0, a PEG of 2.12, and a forward growth estimate of 10.3%.

Has tickerseer's rating of AltaGas changed?

tickerseer's rating has been trading above fair value since 2026-09-19.

Industry: Gas Utilities. Create a free account to see the full analysis: the SeerAI score, its five quality sub-scores, valuation history, and the AI research note. Options setups and metric history are part of the paid plans.

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