GTM · IV Rank History

ZoomInfo Technologies Inc Common Stock

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IV rank shows where GTM'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.

GTM's 30-day at-the-money implied volatility was 89.2% as of Oct 22, 2026. Its 52-week IV rank is 35 and its IV percentile is 87%: IV was lower on 87% of the past year's sessions. Over those 52 weeks it ranged from 35.0% (Jan 14, 2026) to 189.5% (Jul 9, 2026). On the 90-session window our screeners use, the IV rank is 24.

GTM IV rank history

352 sessions

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

GTM IV rank and implied volatility as of 2026-10-22

52-Week IV Rank

0 = year low, 100 = year high

IV Percentile

87%

of past-year sessions had lower IV

90-Session IV Rank

used by our screeners

30-Day ATM IV

89.2%

1-year average 70.2%

7-Day ATM IV

71.1%

90-session rank 11

52-Week IV High

189.5%

2026-07-09

52-Week IV Low

35.0%

2026-01-14

History Since

2025-05-15

352 sessions

How these are measured. Implied volatility here is GTM'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 GTM 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.

GTM implied volatility by month

Month	Avg ATM IV	High	Low	Avg IV Rank (90-session)
Oct 2026 (to date)	85.5%	92.9%	70.7%	21
Sep 2026	63.6%	68.4%	57.1%	5
Aug 2026	77.0%	113.5%	63.4%	13
Jul 2026	114.5%	189.5%	82.9%	57
Jun 2026	83.7%	93.1%	74.1%	73
May 2026	74.8%	95.1%	62.5%	65
Apr 2026	75.1%	90.2%	58.3%	82
Mar 2026	58.1%	67.5%	52.6%	51
Feb 2026	64.5%	79.6%	55.7%	64
Jan 2026	55.3%	74.3%	35.0%	43
Dec 2025	43.7%	51.3%	36.5%	13
Nov 2025	51.2%	80.7%	43.8%	32
Oct 2025	61.4%	71.0%	52.3%	75
Sep 2025	47.0%	55.2%	40.5%	31
Aug 2025	44.0%	62.7%	37.4%	21
Jul 2025	61.0%	68.2%	51.3%	90
Jun 2025	43.9%	51.6%	39.1%	69
May 2025	44.0%	47.1%	42.2%	—

GTM IV rank: last 30 sessions

Date	IV Rank (90-session)	30-Day ATM IV	7-Day ATM IV
2026-10-22	24	89.2%	71.1%
2026-10-21	24	89.1%	162.9%
2026-10-20	24	89.3%	74.0%
2026-10-19	22	86.6%	75.0%
2026-10-16	20	84.2%	71.0%
2026-10-15	26	91.6%	63.8%
2026-10-14	25	90.4%	63.8%
2026-10-13	24	88.4%	100.7%
2026-10-12	23	87.8%	90.1%
2026-10-09	19	82.9%	68.4%
2026-10-08	27	92.9%	76.3%
2026-10-07	23	87.3%	78.5%
2026-10-06	15	76.9%	77.2%
2026-10-05	20	83.4%	81.9%
2026-10-02	10	70.7%	57.2%
2026-10-01	15	76.6%	68.6%
2026-09-30	1	59.0%	85.3%
2026-09-29	7	66.8%	75.3%
2026-09-28	6	65.6%	71.2%
2026-09-25	8	68.4%	77.7%
2026-09-24	6	65.7%	60.1%
2026-09-23	5	63.2%	75.5%
2026-09-22	6	65.1%	84.7%
2026-09-21	4	61.8%	68.0%
2026-09-18	6	65.2%	101.9%
2026-09-17	5	63.4%	74.2%
2026-09-16	1	59.1%	75.2%
2026-09-15	3	61.0%	62.5%
2026-09-14	5	63.8%	71.6%
2026-09-11	2	60.4%	74.7%