RYTM Butterfly Strategy

RYTM (Rhythm Pharmaceuticals, Inc.), in the Healthcare sector, (Biotechnology industry), listed on NASDAQ.

Rhythm Pharmaceuticals, Inc., a commercial-stage biopharmaceutical company, focuses on the development and commercialization of therapeutics for the treatment of rare genetic diseases of obesity. The company's lead product candidate is IMCIVREE, a potent melanocortin-4 receptor for the treatment of pro-opiomelanocortin (POMC), proprotein convertase subtilisin/kexin type 1, leptin receptor (LEPR) deficiency obesity, and Bardet-Biedl and Alström syndrome. It is also developing setmelanotide, which is in Phase II clinical trials for treating POMC or LEPR heterozygous deficiency obesities, steroid receptor coactivator 1 deficiency obesity, SH2B1 deficiency obesity, MC4 receptor deficiency obesity, Smith-Magenis syndrome obesity, POMC epigenetic disorders, and other MC4R disorders. Rhythm Pharmaceuticals, Inc. has a collaborative research agreement with the Clinical Registry Investigating Bardet-Biedl Syndrome. The company was formerly known as Rhythm Metabolic, Inc. and changed its name to Rhythm Pharmaceuticals, Inc. in October 2015. Rhythm Pharmaceuticals, Inc. was founded in 2008 and is headquartered in Boston, Massachusetts.

RYTM (Rhythm Pharmaceuticals, Inc.) trades in the Healthcare sector, specifically Biotechnology, with a market capitalization of approximately $6.42B, a beta of 1.94 versus the broader market, a 52-week range of 57.2-122.2, average daily share volume of 873K, a public-listing history dating back to 2017, approximately 283 full-time employees. These structural characteristics shape how RYTM stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 1.94 indicates RYTM has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position.

What is a butterfly on RYTM?

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.

Current RYTM snapshot

As of May 15, 2026, spot at $90.66, ATM IV 81.90%, IV rank 37.64%, expected move 23.48%. The butterfly on RYTM below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 63-day expiry.

Why this butterfly structure on RYTM specifically: RYTM IV at 81.90% is mid-range versus its 1-year history, so strategy selection should anchor more to the directional thesis than to the IV regime, with a market-implied 1-standard-deviation move of approximately 23.48% (roughly $21.29 on the underlying). The 63-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated RYTM expiries trade a higher absolute premium for lower per-day decay. Position sizing on RYTM should anchor to the underlying notional of $90.66 per share and to the trader's directional view on RYTM stock.

RYTM butterfly setup

The RYTM 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 RYTM near $90.66, the first option leg uses a $85.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed RYTM chain at a 63-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 RYTM shares for the stock leg in covered calls and collars).

ActionTypeStrike / BasisPremium (est)
Buy 1Call$85.00$13.75
Sell 2Call$90.00$11.30
Buy 1Call$95.00$9.20

RYTM butterfly risk and reward

Net Premium / Debit
-$35.00
Max Profit (per contract)
$444.06
Max Loss (per contract)
-$35.00
Breakeven(s)
$85.23, $94.65
Risk / Reward Ratio
12.687

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.

RYTM butterfly payoff curve

Modeled P&L at expiration across a range of underlying prices for the butterfly on RYTM. 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.

Underlying Price% From SpotP&L at Expiration
$0.01-100.0%-$35.00
$20.05-77.9%-$35.00
$40.10-55.8%-$35.00
$60.14-33.7%-$35.00
$80.19-11.6%-$35.00
$100.23+10.6%-$35.00
$120.28+32.7%-$35.00
$140.32+54.8%-$35.00
$160.36+76.9%-$35.00
$180.41+99.0%-$35.00

When traders use butterfly on RYTM

Butterflies on RYTM are pinning bets - traders use them when they expect RYTM 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.

RYTM thesis for this butterfly

The market-implied 1-standard-deviation range for RYTM extends from approximately $69.37 on the downside to $111.95 on the upside. A RYTM long call butterfly is a pinning play: it pays maximum at the middle strike if RYTM settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current RYTM IV rank near 37.64% is mid-range against its 1-year distribution, so the IV signal is neutral; the butterfly thesis on RYTM should anchor more to the directional view and the expected-move geometry. As a Healthcare name, RYTM options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to RYTM-specific events.

RYTM 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. RYTM positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move RYTM alongside the broader basket even when RYTM-specific fundamentals are unchanged. Always rebuild the position from current RYTM chain quotes before placing a trade.

Frequently asked questions

What is a butterfly on RYTM?
A butterfly on RYTM is the butterfly strategy applied to RYTM (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 RYTM stock trading near $90.66, the strikes shown on this page are snapped to the nearest listed RYTM chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are RYTM 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 RYTM butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 81.90%), the computed maximum profit is $444.06 per contract and the computed maximum loss is -$35.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a RYTM butterfly?
The breakeven for the RYTM butterfly priced on this page is roughly $85.23 and $94.65 at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current RYTM market-implied 1-standard-deviation expected move is approximately 23.48%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a butterfly on RYTM?
Butterflies on RYTM are pinning bets - traders use them when they expect RYTM 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 RYTM implied volatility affect this butterfly?
RYTM ATM IV is at 81.90% with IV rank near 37.64%, which is mid-range against its 1-year history. Strategy selection depends more on directional thesis and expected move than on a strong IV signal.

Related RYTM analysis