FAC Butterfly Strategy
FAC (Factorial Energy Inc.), in the Industrials sector, (Electrical Equipment & Parts industry), listed on NASDAQ.
Factorial Energy Inc. manufactures and sells solid-state batteries for the eMobility, defense, and AI/robotics markets. The company offers products, such as high-performing solid-state battery cells, and utilizes advanced manufacturing techniques, including a proprietary dry-coating process. The company was founded in 2013 and is headquartered in Billerica, Massachusetts.
FAC (Factorial Energy Inc.) trades in the Industrials sector, specifically Electrical Equipment & Parts, with a market capitalization of approximately $161.7M, a beta of 1.23 versus the broader market, a 52-week range of 4.24-25.33, average daily share volume of 407K, a public-listing history dating back to 2025, approximately 2 full-time employees. These structural characteristics shape how FAC stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.23 places FAC roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline.
What is a butterfly on FAC?
A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration.
FAC snapshot
As of August 14, 2026, spot at $5.22, ATM IV 114.70%, expected move 32.88%. The butterfly on FAC below is built from the end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 35-day expiry.
Why this butterfly structure on FAC specifically: IV rank is unavailable in the current snapshot, so regime-based timing for FAC is inferred from ATM IV at 114.70% alone, with a market-implied 1-standard-deviation move of approximately 32.88% (roughly $1.72 on the underlying). The 35-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated FAC expiries trade a higher absolute premium for lower per-day decay. Position sizing on FAC should anchor to the underlying notional of $5.22 per share and to the trader's directional view on FAC stock.
FAC butterfly setup
The FAC butterfly below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With FAC at $5.22 on that close, the first option leg uses a $4.96 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed FAC chain at a 35-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 FAC shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $4.96 | N/A |
| Sell 2 | Call | $5.22 | N/A |
| Buy 1 | Call | $5.48 | N/A |
FAC butterfly risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit.
FAC butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on FAC. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
When traders use butterfly on FAC
Butterflies on FAC are pinning bets - traders use them when they expect FAC to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
FAC thesis for this butterfly
The market-implied 1-standard-deviation range for FAC extends from approximately $3.50 on the downside to $6.94 on the upside. A FAC long call butterfly is a pinning play: it pays maximum at the middle strike if FAC settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. As a Industrials name, FAC options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to FAC-specific events.
FAC butterfly positions are structurally neutral / pin (limited-risk, limited-reward); the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. FAC positions also carry Industrials sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move FAC alongside the broader basket even when FAC-specific fundamentals are unchanged. Always rebuild the position from current FAC chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on FAC?
- A butterfly on FAC is the butterfly strategy applied to FAC (stock). The strategy is structurally neutral / pin (limited-risk, limited-reward): A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration. With FAC stock at $5.22 on the most recent close, the strikes shown on this page are snapped to the nearest listed FAC chain strike and the premiums come straight from that session's bid/ask midpoint.
- How are FAC butterfly max profit and max loss calculated?
- Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit. For the FAC butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 114.70%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a FAC butterfly?
- The breakeven for the FAC butterfly priced on this page is no defined breakeven on the modeled curve at expiration, derived from the end-of-day chain's premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The FAC market-implied 1-standard-deviation expected move in the same options snapshot is approximately 32.88%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on FAC?
- Butterflies on FAC are pinning bets - traders use them when they expect FAC to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
- How does current FAC implied volatility affect this butterfly?
- Current FAC ATM IV is 114.70%; IV rank context is unavailable in the current snapshot.