Global X - Cybersecurity ETF (BUG) Open Interest History
Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.
Global X - Cybersecurity ETF (BUG) operates in the Financial Services sector, specifically the Asset Management - Global industry, with a market capitalization near $807.2M, listed on NASDAQ, carrying a beta of 1.13 to the broader market. The Global X Cybersecurity ETF, trading under the symbol BUG, is designed to closely mirror the total financial returns of the Indxx Cybersecurity Index. public since 2019-11-01.
Snapshot as of Jun 30, 2026.
- Spot Price
- $38.12
- Call OI
- 16.4K
- Put OI
- 4.6K
- Total OI
- 21.0K
- Put/Call Ratio
- 0.32
As of Jun 30, 2026, Global X - Cybersecurity ETF (BUG) has 21.0K total contracts outstanding across all expirations. Put/call OI ratio is 0.28 (call-heavy positioning). Open interest reflects accumulated positions from prior sessions; persistent growth indicates sustained directional or hedging interest, while sharp drops typically mean post-expiration clean-up.
How BUG open interest history Data Feeds Strategy Selection
Strategy selection on Global X - Cybersecurity ETF options does not derive from any single metric in isolation. The open interest history view above sits inside a broader read: ATM IV currently sits at 44.6% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the open interest history data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.
How to read the BUG open-interest data
The open-interest time-series above tracks the total Global X - Cybersecurity ETF options inventory outstanding day by day. OI is a stock measure - the cumulative position count - so trends flag accumulating or distributing positioning. Current put/call ratio is 0.32, call-heavy - speculative or bullish positioning dominates. Total call OI of 16.4K versus put OI of 4.6K gives a put/call OI ratio of 0.28 - structurally a slower-moving signal than the volume-based ratio.
BUG flow vs positioning
Volume tells you what flows happened today; OI tells you what positions accumulated. Both can move in opposite directions: rising volume with falling OI means contracts are being closed (covering); rising volume with rising OI means new positions are being opened. The combination matters more than either alone for reading sentiment. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.
Using BUG OI/volume data alongside other surfaces
Per-strike OI is the input to dealer-gamma calculations: strikes with elevated call OI generate gamma walls that dealers must hedge into as spot approaches them. The gamma-exposure page combines this distribution with the dealers' assumed-long-gamma assumption to project hedge flow. Volume cross-checks recent positioning shifts in the chain that haven't yet shown up in cumulative OI. Pair both with the term-structure view on the volatility page to determine whether the activity is concentrated in near-dated event hedging or longer-dated structural positioning. Front-month expiration for BUG sits at 17 days, so near-dated volume currently dominates the flow reading.
Learn how open interest is reported and how to read the data →
Daily open-interest history for BUG options over the last ~40 trading days. Each row reflects the end-of-day total OI summed across all listed strikes and expirations.
Most recent 15 trading days (descending). Older history appears in the chart above.
| Date | Call OI | Put OI | Total OI | P/C OI |
|---|---|---|---|---|
| Jun 30, 2026 | 16.4K | 4.6K | 21.0K | 0.28 |
| Jun 29, 2026 | 16.4K | 4.5K | 20.9K | 0.27 |
| Jun 26, 2026 | 16.3K | 4.5K | 20.7K | 0.27 |
| Jun 25, 2026 | 16.3K | 4.4K | 20.7K | 0.27 |
| Jun 24, 2026 | 16.3K | 4.4K | 20.7K | 0.27 |
| Jun 23, 2026 | 15.9K | 4.5K | 20.4K | 0.29 |
| Jun 22, 2026 | 15.1K | 4.5K | 19.5K | 0.30 |
| Jun 18, 2026 | 27.1K | 8.9K | 36.0K | 0.33 |
| Jun 17, 2026 | 27.3K | 9.0K | 36.4K | 0.33 |
| Jun 16, 2026 | 27.6K | 9.0K | 36.6K | 0.33 |
| Jun 15, 2026 | 27.6K | 9.0K | 36.6K | 0.33 |
| Jun 11, 2026 | 27.8K | 9.0K | 36.8K | 0.33 |
| Jun 10, 2026 | 27.8K | 9.0K | 36.8K | 0.33 |
| Jun 9, 2026 | 28.1K | 9.0K | 37.1K | 0.32 |
| Jun 8, 2026 | 28.8K | 8.9K | 37.7K | 0.31 |
Frequently asked BUG open interest history questions
- What is the current BUG options open interest?
- As of Jun 30, 2026, Global X - Cybersecurity ETF (BUG) has 21.0K total contracts outstanding across all listed expirations, split as 16.4K calls and 4.6K puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.
- What is the BUG put/call open interest ratio?
- Put/call OI ratio of 0.28 is call-heavy, often a directional bullish or upside-speculation signal.
- What does BUG open interest tell traders?
- Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.