BULL · IV Rank History

Webull Corporation Class A Ordinary Shares

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IV rank shows where BULL's implied volatility sits within its own recent range: 0 is the lowest reading in the window, 100 the highest. This page gives the 52-week version, the 90-session version our screeners use, the IV percentile, and the daily history.

BULL's 30-day at-the-money implied volatility was 67.8% as of Oct 30, 2026. Its 52-week IV rank is 37 and its IV percentile is 54%: IV was lower on 54% of the past year's sessions. Over those 52 weeks it ranged from 52.0% (Sep 16, 2026) to 94.2% (Mar 2, 2026). On the 90-session window our screeners use, the IV rank is 59.

BULL IV rank history

378 sessions

Filled line: 90-session IV rank (0–100, left axis). Dashed line: 30-day at-the-money implied volatility (right axis).

BULL IV rank and implied volatility as of 2026-10-30

52-Week IV Rank

0 = year low, 100 = year high

IV Percentile

54%

of past-year sessions had lower IV

90-Session IV Rank

used by our screeners

30-Day ATM IV

67.8%

1-year average 69.0%

7-Day ATM IV

62.4%

90-session rank 14

52-Week IV High

94.2%

2026-03-02

52-Week IV Low

52.0%

2026-09-16

History Since

2025-04-28

378 sessions

How these are measured. Implied volatility here is BULL's 30-day at-the-money IV: the implied volatility of the calls and puts struck nearest the share price, blended between the expirations on either side of 30 days so every reading covers the same horizon. It's the IV level options traders usually quote, and it doesn't jump when the nearest expiration rolls from a weekly to a monthly. The 7-day figure is the same measure a week out, so it reacts first to near-term events such as earnings.

52-week IV rank = (today's IV − 52-week low) ÷ (52-week high − 52-week low) × 100. IV percentile is the share of the past year's sessions that closed with lower IV than today. The 90-session IV rank applies the same rank formula to the last 90 sessions, so it reacts faster.

A high reading means BULL options are expensive relative to their own recent history, which is common ahead of earnings or after a sharp move. It says nothing about which way the stock will go. The Vol Arb Screener ranks every tracked symbol by these measures.

BULL implied volatility by month

Month	Avg ATM IV	High	Low	Avg IV Rank (90-session)
Oct 2026 (to date)	65.4%	78.9%	53.4%	51
Sep 2026	58.5%	62.2%	52.0%	17
Aug 2026	64.5%	74.0%	55.7%	25
Jul 2026	68.5%	77.5%	60.8%	37
Jun 2026	65.5%	70.6%	58.8%	26
May 2026	73.6%	89.5%	64.4%	47
Apr 2026	73.0%	84.4%	55.5%	45
Mar 2026	72.1%	94.2%	58.0%	42
Feb 2026	77.7%	94.0%	63.2%	44
Jan 2026	62.3%	67.1%	57.0%	10
Dec 2025	64.4%	68.9%	55.7%	4
Nov 2025	82.3%	92.8%	67.8%	15
Oct 2025	95.5%	117.9%	79.2%	32
Sep 2025	94.7%	123.0%	67.6%	32
Aug 2025	93.3%	106.3%	70.8%	31
Jul 2025	104.6%	163.0%	80.3%	42
Jun 2025	75.5%	87.5%	62.5%	5
May 2025	115.4%	148.3%	81.7%	2
Apr 2025	159.5%	161.8%	157.2%	—

BULL IV rank: last 30 sessions

Date	IV Rank (90-session)	30-Day ATM IV	7-Day ATM IV
2026-10-30	59	67.8%	62.4%
2026-10-29	45	64.2%	63.4%
2026-10-28	51	65.8%	65.3%
2026-10-27	78	72.8%	68.6%
2026-10-26	63	68.8%	62.6%
2026-10-23	50	65.5%	63.0%
2026-10-22	45	64.2%	61.2%
2026-10-21	46	64.3%	62.0%
2026-10-20	61	68.3%	71.0%
2026-10-19	41	63.1%	61.9%
2026-10-16	52	66.0%	61.8%
2026-10-15	100	78.9%	62.6%
2026-10-14	86	74.0%	68.5%
2026-10-13	29	59.4%	58.6%
2026-10-12	28	59.0%	66.5%
2026-10-09	43	62.9%	62.8%
2026-10-08	73	70.7%	66.6%
2026-10-07	85	73.7%	89.0%
2026-10-06	34	60.6%	58.3%
2026-10-05	6	53.4%	59.3%
2026-10-02	23	58.0%	54.3%
2026-10-01	21	57.3%	55.2%
2026-09-30	34	61.1%	58.9%
2026-09-29	21	57.7%	57.7%
2026-09-28	22	57.9%	57.4%
2026-09-25	33	60.8%	51.3%
2026-09-24	15	56.1%	62.5%
2026-09-23	11	54.9%	54.6%
2026-09-22	27	59.2%	61.3%
2026-09-21	37	61.9%	63.3%