F/m US Treasury 3 Month Bill Fund (TBIL) 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.
F/m US Treasury 3 Month Bill Fund (TBIL) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $7.10B, listed on NASDAQ, carrying a beta of -0.00 to the broader market. TBIL is part of the first single-bond ETF suite. Led by Alexander Morris, public since 2022-08-09.
Snapshot as of Jun 30, 2026.
- Spot Price
- $49.86
- Call OI
- 18
- Put OI
- 9
- Total OI
- 27
As of Jun 30, 2026, F/m US Treasury 3 Month Bill Fund (TBIL) has 27 total contracts outstanding across all expirations. Put/call OI ratio is 0.50 (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 TBIL open interest history Data Feeds Strategy Selection
Strategy selection on F/m US Treasury 3 Month Bill Fund 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 5.1% 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 TBIL open-interest data
The open-interest time-series above tracks the total F/m US Treasury 3 Month Bill Fund options inventory outstanding day by day. OI is a stock measure - the cumulative position count - so trends flag accumulating or distributing positioning. Total call OI of 18 versus put OI of 9 gives a put/call OI ratio of 0.50 - structurally a slower-moving signal than the volume-based ratio.
TBIL 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 TBIL 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 TBIL 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 TBIL options over the last ~35 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 | 18 | 9 | 27 | 0.50 |
| Jun 29, 2026 | 18 | 9 | 27 | 0.50 |
| Jun 26, 2026 | 17 | 9 | 26 | 0.53 |
| Jun 25, 2026 | 17 | 9 | 26 | 0.53 |
| Jun 24, 2026 | 17 | 9 | 26 | 0.53 |
| Jun 23, 2026 | 17 | 9 | 26 | 0.53 |
| Jun 22, 2026 | 12 | 9 | 21 | 0.75 |
| Jun 18, 2026 | 11 | 14 | 25 | 1.27 |
| Jun 17, 2026 | 9 | 14 | 23 | 1.56 |
| Jun 15, 2026 | 9 | 11 | 20 | 1.22 |
| Jun 12, 2026 | 7 | 11 | 18 | 1.57 |
| Jun 11, 2026 | 6 | 10 | 16 | 1.67 |
| Jun 10, 2026 | 5 | 9 | 14 | 1.80 |
| Jun 9, 2026 | 5 | 9 | 14 | 1.80 |
| Jun 5, 2026 | 0 | 9 | 9 | - |
Frequently asked TBIL open interest history questions
- What is the current TBIL options open interest?
- As of Jun 30, 2026, F/m US Treasury 3 Month Bill Fund (TBIL) has 27 total contracts outstanding across all listed expirations, split as 18 calls and 9 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 TBIL put/call open interest ratio?
- Put/call OI ratio of 0.50 is call-heavy, often a directional bullish or upside-speculation signal.
- What does TBIL 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.