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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 Aug 21, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
411	10,188	45	2,126

TAC Aug 21, 2026 Exp. - Volume by Strike

Puts

Calls

TAC Aug 21, 2026 Exp. - Open Interest by Strike

Puts

Calls

TAC Aug 21, 2026 Exp. - Max Pain @ $13.00

Puts

Calls

TAC Aug 21, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
35 C	0.06	+20.00%	1,400	1,387	05-26	TAC260821C00035000
30 C	0.05	0%	4	2	06-26	TAC260821C00030000
25 C	0.16	-68.00%	1	316	04-15	TAC260821C00025000
22 C	0.06	-40.00%	10	95	05-14	TAC260821C00022000
21 C	0.08	-20.00%	50	50	06-24	TAC260821C00021000
20 C	0.07	-36.36%	2	1,732	07-07	TAC260821C00020000
19 C	0	0%	0			TAC260821C00019000
18 C	0.20	-60.00%	30	270	06-17	TAC260821C00018000
17 C	0.12	-20.00%	1	970	07-21	TAC260821C00017000
16 C	0.25	-7.41%	1	286	07-22	TAC260821C00016000
15 C	0.50	+11.11%	25	4,967	07-23	TAC260821C00015000
14 C	0.85	+3.66%	2	113	07-23	TAC260821C00014000
13 C	1.50	+53.06%	4	357	07-23	TAC260821C00013000
12 C	2.25	-29.69%	7	23	07-23	TAC260821C00012000
11 C	2.20	-2.22%	2	2	05-01	TAC260821C00011000
10 C	4.48	+35.76%	3	12	07-10	TAC260821C00010000
9 C	4.30	-1.15%	3	3	03-27	TAC260821C00009000
8 C	7.00	0%	1	1	11-20	TAC260821C00008000
7 C	7.06	+17.67%	1	1	04-09	TAC260821C00007000
6 C	0	0%	0			TAC260821C00006000
5 C	8.80	+17.33%	5	10	05-22	TAC260821C00005000
3 C	10.00	0.00%	2	2	06-05	TAC260821C00003000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
35 P	22.45	0%	4	0	02-04	TAC260821P00035000
30 P	17.40	0%	4	0	02-04	TAC260821P00030000
25 P	12.45	0%	2	1	02-04	TAC260821P00025000
22 P	9.46	0%	2	1	02-04	TAC260821P00022000
21 P	0	0%	0			TAC260821P00021000
20 P	5.70	-9.24%	2	2	06-01	TAC260821P00020000
19 P	0	0%	0			TAC260821P00019000
18 P	0	0%	0			TAC260821P00018000
17 P	3.42	0%	1	1	10-16	TAC260821P00017000
16 P	0	0%	0			TAC260821P00016000
15 P	1.40	-20.45%	25	29	07-23	TAC260821P00015000
14 P	0.80	-5.88%	2	11	07-23	TAC260821P00014000
13 P	0.60	-7.69%	1,101	997	07-20	TAC260821P00013000
12 P	0.90	+80.00%	21	25	06-10	TAC260821P00012000
11 P	0.54	+170.00%	1	5	06-05	TAC260821P00011000
10 P	0.05	0.00%	1	1,098	07-21	TAC260821P00010000
9 P	0	0%	0			TAC260821P00009000
8 P	0.10	-60.00%	1	1	11-21	TAC260821P00008000
7 P	0	0%	0			TAC260821P00007000
6 P	0	0%	0			TAC260821P00006000
5 P	0	0%	0			TAC260821P00005000
3 P	0	0%	0			TAC260821P00003000

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