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RARE
Ultragenyx Pharmaceutical Inc.
stock NASDAQ

At Close

Aug 20, 2026 3:59:56 PM EDT

25.33USD-3.487%(-0.91)3,831,208

21.80Bid 28.78Ask 6.98Spread

Pre-market

Aug 20, 2026 9:27:49 AM EDT

28.67USD+9.261%(+2.43)64,829

After-hours

Aug 20, 2026 4:32:30 PM EDT

25.46USD+0.552%(+0.14)565,605

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Aug 21, 2026 Sep 18, 2026 Oct 16, 2026 Nov 20, 2026 Dec 18, 2026 Jan 15, 2027 Feb 19, 2027 Jan 21, 2028

ITM/OTM for Dec 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
4,025	149	29	35

RARE Dec 18, 2026 Exp. - Volume by Strike

Puts

Calls

RARE Dec 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

RARE Dec 18, 2026 Exp. - Max Pain @ $25.00

Puts

Calls

RARE Dec 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
50.00 C	2.50	-7.41%	1	83	08-19	RARE261218C00050000
47.50 C	0	0%	0			RARE261218C00047500
45.00 C	0	0%	0			RARE261218C00045000
42.50 C	0	0%	0			RARE261218C00042500
40.00 C	3.90	-56.67%	1	3	07-28	RARE261218C00040000
37.50 C	5.33	0%	1	1	07-27	RARE261218C00037500
35.00 C	5.24	-7.91%	15	18	08-19	RARE261218C00035000
32.50 C	5.90	0%	11	11	08-12	RARE261218C00032500
30.00 C	6.16	-8.06%	1	30	08-18	RARE261218C00030000
27.50 C	7.60	0%	3	3	08-12	RARE261218C00027500
25.00 C	8.61	+7.49%	15	4,022	08-19	RARE261218C00025000
22.50 C	0	0%	0			RARE261218C00022500
20.00 C	10.38	0%	3	3	08-17	RARE261218C00020000
17.50 C	13.84	0%	1	0	06-18	RARE261218C00017500
15.00 C	0	0%	0			RARE261218C00015000
12.50 C	0	0%	0			RARE261218C00012500

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
50.00 P	0	0%	0			RARE261218P00050000
47.50 P	0	0%	0			RARE261218P00047500
45.00 P	20.90	0%	6	6	08-12	RARE261218P00045000
42.50 P	0	0%	0			RARE261218P00042500
40.00 P	0	0%	0			RARE261218P00040000
37.50 P	0	0%	0			RARE261218P00037500
35.00 P	13.10	0%	7	7	08-12	RARE261218P00035000
32.50 P	10.85	+4.83%	9	9	07-17	RARE261218P00032500
30.00 P	10.90	+2.83%	2	1	08-14	RARE261218P00030000
27.50 P	6.85	0%	6	6	06-29	RARE261218P00027500
25.00 P	0	0%	0			RARE261218P00025000
22.50 P	5.00	0.00%	1	21	08-14	RARE261218P00022500
20.00 P	0	0%	0			RARE261218P00020000
17.50 P	2.40	0.00%	1	2	08-11	RARE261218P00017500
15.00 P	1.55	-3.13%	1	5	08-18	RARE261218P00015000
12.50 P	0.70	-6.67%	3	7	08-18	RARE261218P00012500

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