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Open Interest Monitor - 30 Oct 2025 - Bitcoin ETF (IBIT) deep dive

Options 10 minutes to read
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Koen Hoorelbeke

Investment and Options Strategist

Open Interest Monitor – 30 October 2025 - Bitcoin ETF (IBIT) deep dive

Data through market close 2025-10-28

This monitor scans US-listed options markets to identify where open interest (OI) is concentrated, where skew and IV suggest positioning, and how this translates into sentiment signals. Each edition also features a focused options deep dive on a selected underlying—where we analyze volatility structure, positioning, and flow data to better understand what market participants may be anticipating.

Bitcoin ETF (IBIT) options: steady near-term expectations, with pressure building around key levels

Based on IBIT options data for the 21 November 2025 expiry. As of market close 29 October.

Bitcoin and the broader crypto market took the recent Fed decision in stride. A rate cut was delivered, but the messaging was cautious. There was no strong move in either direction, and that restraint was mirrored in the options market for IBIT, BlackRock’s spot bitcoin ETF.

IBIT closed near USD 63, with option traders mostly sticking to familiar territory. The activity around the 21 November expiry tells a simple but useful story: expectations are contained, but positioning is quietly building around key price levels.

Options positioning points to a narrow range — for now

Across the November expiry, the largest concentration of open contracts, known as open interest, sits between USD 60 and 70. That zone also includes IBIT’s current price, which suggests the market is content for now. When a lot of contracts cluster around the current level, it can act like a magnet. Prices often stay pinned there until something forces a shift.

2025-10-29-00-IBIT-OI-distribution-curve
Chart showing highest open interest between USD 60 and 70, with large call positions at 70 and 80. Lighter activity beyond © SaxoTraderGO / Pro

The positioning is also tilted toward calls, contracts that profit if the price rises. These are especially concentrated at the USD 70 and USD 80 strikes. In options terms, these are known as call walls: zones where the build-up of contracts can act as soft resistance, making it harder for the price to push through without a strong catalyst.

Volatility is priced for calm, but not complacency

The market is not expecting large swings in the near term. That’s reflected in implied volatility, a measure of expected future movement. The IV for IBIT’s November expiry is around 42%, which is relatively moderate by crypto standards. That means traders see room for movement, but aren’t pricing in fireworks.

Further out, volatility expectations climb into the 50–54% range. This upward slope in the volatility curve implies that traders are more cautious about what happens later, but still see the next few weeks as likely to stay contained.

2025-10-29-01-IBIT-OI-ATM-IV-Forward-Curve
Line chart showing front-month IV near 42%, rising steadily to over 50% for later expiries © SaxoTrader Go/Pro

The option chain confirms what the chart suggests

Looking at the full option chain for the 21 November expiry, the patterns become even clearer. Below the current price, there’s consistent put activity around USD 60–62. These contracts are often used for protection, suggesting some caution, but not outright fear.

Above spot, the attention shifts to calls. The USD 70 and USD 80 strikes stand out, not just for their size, but because they line up neatly with round numbers on the price chart. That tends to reinforce their significance.

2025-10-29-02-IBIT-optionchain-with-hotspots
Highlighted options show put concentration around USD 60–62, with thick call interest at USD 70 and 80. Smaller clusters above. © SaxoTrader Go/Pro

Important note: The strategies and examples described are purely for educational purposes. They assist in shaping your thought process and should not be replicated or implemented without careful consideration. Every investor must conduct their own due diligence, considering their financial situation, risk tolerance, and investment objectives before making decisions. Remember, investing in the stock market carries risks, so make informed decisions.

What a trader might take away from this

If you’re learning how to interpret option data, this is a textbook case. The distribution shows where traders expect prices to stay, and where they expect pressure to build.

With price sitting right in the middle of the range and volatility low, some traders might explore defined-risk strategies that benefit if the price stays between two levels. For example, a structure that collects premium if IBIT stays between USD 60 and 70 through expiry.

Others might look at the outer zones. If IBIT moves above USD 70 and holds, that could open the door to higher levels, but the current call positioning suggests it won’t be easy. A modest upside trade might aim to capture a slow move into that area. Similarly, if the price dips below USD 60, the puts clustered around that level could offer a short-term signal or setup.

Importantly, all of this is happening within the same expiry, 21 November, which means the positioning is short-term in nature. This isn’t a long-term bet on Bitcoin. It’s about what the market expects over the next three weeks.

Final thought

The IBIT options market is sending a clear message. Traders expect things to stay steady for now, with prices pinned between USD 60 and 70 unless something changes. The shape of the volatility curve suggests that if a move does come, it’s more likely to be later than sooner. And the current positioning - concentrated, call-heavy, and short-dated - means that when the range finally breaks, we’ll have a good idea of where the pressure was building.

What’s driving open interest shifts this week?

With the Bitcoin ETF deep dive complete, we now turn our attention to the broader market. Below is our weekly scan of the top 20 names by 1-month open interest growth, filtered for those with at least 100,000 in options volume.

These are the tickers where traders are most aggressively positioning, rolling, or hedging - and the shifts can offer early clues about narrative changes, speculative flows, or hedging intensity.

Top 20 names by open interest growth

RankTickerNameLastIV Rank (%)Total OI1M OI %ChgOptions VolP/C Vol.
1UUUUEnergy Fuels Inc19.1068.11.0M+0.4%427.6K0.21
2PATHUipath Inc Cl A17.3967.41.0M+0.3%203.4K0.19
3BULLWebull Corp Cl A11.5718.51.6M+0.2%266.3K0.11
4BITFBitfarms Ltd4.5415.91.3M+0.2%140.0K0.16
5NFLXNetflix Inc1094.5614.9680.7K+0.1%133.2K0.53
6GLDGold SPDR260.4618.48.4M+0.1%538.1K0.64
7PFEPfizer Inc32.1934.17.1M+0.1%173.0K0.47
8NBISNebius Group N.V. Cl A29.3670.3254.3K+0.1%280.7K0.28
9TAT&T Inc19.1728.67.6M+0.1%193.0K0.59
10SOXSSemiconductor Bear -3X ETF Direxion39.6126.83.2M+0.1%458.4K0.60
11BACBank of America Corp45.6824.712.2M+0.1%283.6K0.68
12SMHVaneck Semiconductor ETF315.7335.76.9M+0.1%403.6K4.09
13TLT20+ Year Treas Bond Ishares ETF90.2424.912.8M+0.1%546.7K0.79
14FFord Motor Company14.1833.36.0M+0.1%246.1K0.87
15MPMP Materials Corp16.2359.11.1M+0.1%127.6K0.38
16EEMEmrg Mkts Ishares MSCI ETF45.9127.58.4M+0.1%450.2K1.03
17XLFS&P 500 Financials Sector SPDR53.6222.83.7M+0.1%118.3K0.76
18CORZCore Scientific Inc7.4223.72.8M+0.1%254.0K0.10
19IBITIshares Bitcoin Trust ETF77.1331.52.1M+0.1%165.9K0.60
20SLVSilver Trust Ishares29.6630.73.4M+0.1%157.0K0.63

Note: Table now ranks US-listed underlyings by highest one‑month OI change, filtered to daily options volume > 100,000.

Column explainer (see glossary below)

  • IV Rank (%): Position of current IV within its 1Y range
  • Total OI: Aggregate open contracts (calls + puts)
  • 1M OI % Chg: One-month percentage change in OI
  • Options Vol: Most recent trading day total options volume
  • P/C Vol: Put-to-call volume ratio (1-day snapshot)

Momentum and volatility: where positioning is building

At the top of the list, uranium miner Energy Fuels (UUUU) and automation software company UiPath (PATH) both show notable gains in open interest over the past month, with solid options volume and elevated implied volatility. Both names sit above 67% IV Rank, suggesting traders are positioning for continued movement - possibly linked to broader themes like clean energy and AI automation.

Crypto-linked names continue to appear prominently. Bitfarms (BITF) and Webull (BULL) are attracting options activity with extremely low put/call volume ratios, indicating a tilt toward speculative call buying. IBIT, BlackRock’s bitcoin ETF, also remains on the radar with steady interest, reflecting its growing role as a proxy for institutional BTC exposure.

Another group worth noting is made up of large ETFs and blue chips like GLD, BAC, TLT, and XLF. These aren’t at the top of the list for OI growth, but they’re seeing consistent inflows and reflect market-wide hedging or rotation strategies - particularly in response to macro catalysts like Fed policy, rates, and bond volatility.


What the positioning implies

The current data paints a split market. On one side, we see directional bets and call-heavy flows in crypto-adjacent names like Core Scientific (CORZ), BITF, and BULL, names with exceptionally low put/call ratios (below 0.2). These patterns often signal speculative interest rather than hedging.

On the other end, semiconductor ETF SMH stands out with a very high put/call ratio of 4.09. Despite rising OI, this is a clear sign of defensive positioning, potentially reflecting investor caution around chip stocks after their rally. Other pockets of caution include EEM (emerging markets) and Ford, both showing P/C volumes above 0.85.

Volatility remains uneven across the list. While Nebius (NBIS) leads on IV Rank at 70%, several ETFs - including BAC, TLT, and XLF - sit in the 20s, suggesting traders are not pricing in large moves. That creates potential interest for volatility sellers seeking lower entry points for premium capture, though the absolute OI and flow context still matter.


Steady flows, mixed signals

While the shift to a 1M OI % change lens highlights evolving sentiment, the takeaway isn't one unified narrative, it’s a market with both risk-seeking and risk-managing impulses.

The speculative interest in crypto and uranium names sits alongside methodical hedging in sectors like semiconductors and emerging markets. The presence of large ETFs across the board suggests that macro themes remain firmly in play, even as stock-specific stories drive short-term action.

Ultimately, the open interest landscape reflects a market still balancing direction, duration, and defence - one contract at a time.


Conclusion

The data reveals a market leaning in two directions at once. On one side, names like UUUU, PATH, and BITF are seeing call-heavy, high-volatility flows consistent with speculative setups. On the other, institutional ETFs such as SMH, EEM, and TLT reflect a more cautious tone, with elevated put activity and moderate implied volatility.

IBIT sits at the intersection of these forces. Its range-bound setup, steady IV, and short-term contract build-up reflect how traders are positioning for stability - while quietly bracing for what might lie beyond the November expiry.

Overall, this week's monitor shows a market not short on conviction, but selective about where to express it. The concentration of flow around well-defined price zones and volatility levels suggests a tactical phase - one where traders are waiting for the next breakout, but not blindly chasing it.

Glossary

  • Ticker: the exchange-listed symbol for the underlying stock, ETF, or index. Indices are noted with a $ prefix in general use, but we map them to specific exchange codes in the ticker string.
  • Name: the company or ETF name associated with the ticker. ETFs typically describe their focus, such as “S&P 500” or “20+ Year Treasury Bonds.”
  • Last: The last traded price of the underlying asset (stock, ETF, or index). This gives a reference point for where the asset currently trades and helps identify how close it is to key strike levels in the option chain.
  • IV Rank (%): Implied Volatility Rank (IV Rank) shows where current implied volatility sits relative to the past 12 months. A reading of 0% means IV is at its lowest point of the year; 100% means it's at the highest. Higher IV Rank suggests options are more expensive compared to recent history, which may favour premium-selling strategies.
  • Total Open Interest (Total OI): This is the total number of open option contracts across both calls and puts for the underlying. It represents outstanding positions that have not yet been closed or exercised. High OI is often associated with deep liquidity and significant institutional interest.
  • 1M OI % Change: Shows how much total open interest has changed over the past month. A rising figure can point to fresh positioning or increased speculation, while a falling number may indicate closed-out trades or reduced interest in the underlying.
  • Options Volume: The number of option contracts traded during the most recent session. High volume relative to open interest may suggest new trades are being initiated. Sudden spikes often coincide with market-moving news or upcoming events.
  • Put/Call Volume Ratio (P/C Vol): This ratio compares the volume of puts traded to calls on the same day. A ratio above 1.0 implies more puts were traded (often for downside protection), while a value below 1.0 shows call-heavy flow (often speculative or bullish). Extreme readings can highlight skewed sentiment or potential contrarian signals.

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