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TAC
TransAlta Corporation
stock NYSE

At Close

Jul 24, 2026 3:59:57 PM EDT

13.69USD-2.941%(-0.42)853,813

0.00Bid 0.00Ask 0.00Spread

Pre-market

Jul 23, 2026 9:27:30 AM EDT

14.02USD-0.638%(-0.09)0

After-hours

Jul 24, 2026 4:10:30 PM EDT

13.72USD+0.183%(+0.03)77,735

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Aug 21, 2026 Sep 18, 2026 Nov 20, 2026 Dec 18, 2026 Mar 19, 2027

ITM/OTM for Sep 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
481	624	5	27

TAC Sep 18, 2026 Exp. - Volume by Strike

Puts

Calls

TAC Sep 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

TAC Sep 18, 2026 Exp. - Max Pain @ $10.00

Puts

Calls

TAC Sep 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
25 C	0	0%	0			TAC260918C00025000
20 C	0.21	+40.00%	20	21	06-04	TAC260918C00020000
19 C	0	0%	0			TAC260918C00019000
18 C	0.20	-50.00%	1	86	06-26	TAC260918C00018000
17 C	0.35	-14.63%	1	20	06-24	TAC260918C00017000
16 C	0.95	+28.38%	2	105	06-03	TAC260918C00016000
15 C	0.55	-45.00%	1	281	07-20	TAC260918C00015000
14 C	1.03	+14.44%	5	111	07-21	TAC260918C00014000
13 C	1.58	-26.51%	2	325	07-16	TAC260918C00013000
12 C	2.85	+27.23%	1	40	07-10	TAC260918C00012000
11 C	3.45	+32.69%	2	82	07-08	TAC260918C00011000
10 C	4.50	+32.35%	20	21	07-08	TAC260918C00010000
9 C	3.95	-10.23%	3	7	05-12	TAC260918C00009000
8 C	0	0%	0			TAC260918C00008000
7 C	0	0%	0			TAC260918C00007000
6 C	7.40	0%	2	1	05-21	TAC260918C00006000
5 C	8.16	+4.62%	2	3	05-20	TAC260918C00005000
4 C	9.58	-4.20%	2	2	06-11	TAC260918C00004000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
25 P	0	0%	0			TAC260918P00025000
20 P	0	0%	0			TAC260918P00020000
19 P	6.60	-0.75%	1	1	05-06	TAC260918P00019000
18 P	0	0%	0			TAC260918P00018000
17 P	0	0%	0			TAC260918P00017000
16 P	0	0%	0			TAC260918P00016000
15 P	1.96	0%	3	3	07-16	TAC260918P00015000
14 P	2.69	+19.56%	1	1	03-24	TAC260918P00014000
13 P	0.59	-62.89%	1	10	06-26	TAC260918P00013000
12 P	0.56	+12.00%	10	16	07-20	TAC260918P00012000
11 P	0.30	-70.00%	1	1	06-29	TAC260918P00011000
10 P	0	0%	0			TAC260918P00010000
9 P	0	0%	0			TAC260918P00009000
8 P	0	0%	0			TAC260918P00008000
7 P	0	0%	0			TAC260918P00007000
6 P	0	0%	0			TAC260918P00006000
5 P	0	0%	0			TAC260918P00005000
4 P	0	0%	0			TAC260918P00004000

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