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$TAC

TransAlta Corporation

XNYS•Other•Unknown

$12.59+1.70%+$0.2100Prev $12.38LIVE Full chart Live alerts
No recent price bars, the chart lights up when TAC starts printing.

Why is TAC up today? It is at $12.59 (+1.70%), and our scanner flagged it 32 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment TAC spikes, and full due diligence on TAC — key stats, earnings, dilution and insider activity. Free.

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Our scanner flagged $TAC 32 times in the last 30 days. Create a free account to track $TAC, build a watchlist, and get instant unusual-volume alerts, with a full day of premium now and 5 more when you verify your email, no card needed.

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Key Stats

Price & performance
Price
$12.59
Change today
+1.70%
Previous close
$12.38
52-week range
$11.38 – $17.88
Valuation & dividend
Market cap
$3.94B
Ownership & volume
Shares outstanding
316.3M
Live vendor count ↗
Short interest
8.3M
▲ +27% vs prior · as of 2026-07-31
Short % of float
2.9%
Days to cover
5.3d
Avg daily volume
1.6M
Classification
Sector
Other
Industry
Unknown
Exchange
XNYS
Relative volumevs this time of day
5m
0.2x
15m
0.2x
1h
0.4x
1D
0.2x

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Why is $TAC up today?

1 alert today3.2x RVOL

TAC is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on TAC today, peaking at 3.2x its normal volume.

Latest filing6-KForeign issuer report (6-K)Jul 31, 2026 · 20 days ago
Why is $TAC moving? →▶ Replay the moveAuto-generated from live scanner data. Not investment advice.
Trading profileShortableEasy to borrowNo SSRBorrow via Alpaca · SSR from Reg SHO 201

$TAC Sentiment

Bullish
Bearish83Bullish
📰 News: 3 bull · 0 bearToday: +1.7%👥 Community: 0 bull · 0 bear

Blend of news sentiment, today’s move, and community votes. Not investment advice.

$TAC Activity

News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.

Alert· 5h ago +0.5% vs EMA
TAC 200EMA (1m) Trending · 101 bars · L4 · +0.55% above EMA · slope +0.24%
at $12.67
Alert· 6h ago +1.5% vs EMA
TAC 200EMA (1m) Trending · 85 bars · L3 · +1.53% above EMA · slope +0.36%
at $12.77
Alert· 7h ago 3.2× RVOL
TAC hit 3.230x RVOL at 10:44 AM ET
at $12.73
Alert· 1d ago -0.4% vs EMA
$TAC near 200 EMA: -0.43% from 200 EMA at 2:32 PM ET
at $12.34
Alert· 1d ago +1.02%
$TAC moved +1.02% in 1 min (Level 1) at 2:32 PM ET
at $12.34
Alert· 1d ago 65.4× RVOL
TAC hit 65.439x RVOL at 2:32 PM ET
at $12.34
Alert· 3d ago +0.1% vs EMA
TAC 200EMA (5m) Trending · 69 bars · L3 · +0.06% above EMA · slope +0.10%
at $12.71
Alert· 3d ago 2.5× RVOL
TAC hit 2.501x RVOL at 1:57 PM ET
at $12.74
Alert· 8d ago 2.3× RVOL
TAC hit 2.315x RVOL at 3:27 PM ET
at $12.39
Alert· 8d ago 6.8× RVOL
TAC hit 6.844x RVOL at 2:28 PM ET
at $12.40
Alert· 10d ago 2.0× RVOL
TAC hit 2.052x RVOL at 11:23 AM ET
at $12.38
Alert· 14d ago -0.9% vs EMA
$TAC near 200 EMA: -0.87% from 200 EMA at 2:46 PM ET
at $12.46
Alert· 14d ago 19.9× RVOL
TAC hit 19.950x RVOL at 2:46 PM ET
at $12.46
Alert· 14d ago 3.3× RVOL
TAC hit 3.284x RVOL at 2:02 PM ET
at $12.45
Alert· 15d ago 38.4× RVOL
TAC hit 38.399x RVOL at 1:47 PM ET
at $12.69
Alert· 16d ago +1.4% vs EMA
TAC 200EMA (5m) Trending · 76 bars · L3 · +1.37% above EMA · slope +0.32%
at $12.78
Alert· 16d ago +0.7% vs EMA
TAC 200EMA (1m) Trending · 256 bars · L5 · +0.69% above EMA · slope +0.22%
at $12.78
Alert· 16d ago +0.7% vs EMA
TAC 200EMA (1m) Trending · 256 bars · L5 · +0.69% above EMA · slope +0.22%
at $12.78
Alert· 16d ago +0.7% vs EMA
TAC 200EMA (1m) Trending · 256 bars · L5 · +0.69% above EMA · slope +0.22%
at $12.78
Alert· 16d ago +0.4% vs EMA
TAC 50EMA (5m) Trending · 79 bars · L3 · +0.43% above EMA · slope +0.68%
at $12.78
Alert· 16d ago +1.0% vs EMA
$TAC near 200 EMA: +0.98% from 200 EMA at 12:57 PM ET
at $12.70
Alert· 16d ago 3.0× RVOL
TAC hit 2.948x RVOL at 12:57 PM ET
at $12.70
Alert· 16d ago 5.5× RVOL
TAC hit 5.536x RVOL at 11:57 AM ET
at $12.63
Alert· 20d ago 11.2× RVOL
TAC hit 11.232x RVOL at 3:14 PM ET
at $12.64
Alert· 20d ago +0.0% vs EMA
$TAC near 200 EMA: +0.04% from 200 EMA at 2:12 PM ET
at $12.67
News· SEC EDGAR· 20d ago
TRANSALTA CORP filed a Foreign issuer report (6-K)
News· SEC EDGAR· 20d ago
TRANSALTA CORP filed a Foreign issuer report (6-K)
News· SEC EDGAR· 22d ago
TRANSALTA CORP filed a Foreign issuer report (6-K)
News· SEC EDGAR· 51d ago
TRANSALTA CORP filed a Foreign issuer report (6-K)
News· GlobeNewswire Inc.· 111d ago Bullish
TransAlta Corporation Announces Results of the 2026 Annual and Special Meeting of Shareholders and Election of all Directors
News· Benzinga· 113d ago Bullish
TransAlta Declares Dividends
News· GlobeNewswire Inc.· 135d ago Neutral
TransAlta to Host Annual and Special Meeting of Shareholders and First Quarter 2026 Results Conference Call
News· Benzinga· 155d ago Bullish
DIVIDEND 15 SPLIT CORP. Monthly Dividend Declaration for Class A & Preferred Share

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TAC stock FAQ

Why is $TAC up today?

TAC is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on TAC today, peaking at 3.2x its normal volume.

What is the TAC stock price today?

TAC last traded at $12.59, up 1.70% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).

Where can I see live TAC alerts?

The TAC Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged TAC 32 times in the last 30 days.

What exchange is TAC on?

TAC (TransAlta Corporation) trades on XNYS, with a market cap of about $3.94B in the UNKNOWN sector.

Is TAC good for day trading?

That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge TAC for yourself. This is not investment advice.

Live data from TheDesperateTrader scanner. Not investment advice.