How are RGEN bear put spread max profit and max loss calculated?

Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-put strike minus net debit. For the RGEN bear put spread priced from the end-of-day chain at a 30-day expiry (ATM IV 51.30%), the computed maximum profit is $212.50 per contract and the computed maximum loss is -$287.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a RGEN bear put spread?

The breakeven for the RGEN bear put spread priced on this page is roughly $102.13 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 RGEN market-implied 1-standard-deviation expected move is approximately 14.71%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current RGEN implied volatility affect this bear put spread?

RGEN ATM IV is at 51.30% with IV rank near 3.97%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.

RGEN Bear Put Spread Strategy

RGEN (Repligen Corporation), in the Healthcare sector, (Medical - Instruments & Supplies industry), listed on NASDAQ.

Repligen Corporation develops and commercializes bioprocessing technologies and systems for use in biological drug manufacturing process in North America, Europe, the Asia Pacific, and internationally. It offers Protein A ligands that are the binding components of Protein A affinity chromatography resins; and cell culture growth factor products. The company's chromatography products include OPUS pre-packed chromatography columns, which are used in the purification of biologics; and OPUS smaller-scale columns that are used in the high throughput process development screening, viral clearance validation studies, and scale down validation of chromatography processes. It also offers ELISA test kits; and chromatography resins under the CaptivA brand. In addition, the company provides filtration products, such as XCell Alternating Tangential Flow systems that are filtration devices used in upstream perfusion and cell culture processing; TangenX flat sheet cassettes, which are used in downstream biologic drug concentration and formulation processes; KrosFlo tangential flow filtration and tangential flow depth filtration systems; Spectra/Por laboratory and process dialysis products, and SpectraFlo dynamic dialysis systems; and ProConnex single-use hollow fiber. Further, it provides process analytics products, such as slope spectroscopy systems under the SoloVPE, FlowVPE, and FlowVPX brands.

RGEN (Repligen Corporation) trades in the Healthcare sector, specifically Medical - Instruments & Supplies, with a market capitalization of approximately $6.04B, a trailing P/E of 117.35, a beta of 1.09 versus the broader market, a 52-week range of 106.92-175.77, average daily share volume of 983K, a public-listing history dating back to 1986, approximately 2K full-time employees. These structural characteristics shape how RGEN stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 1.09 places RGEN roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. The trailing P/E of 117.35 is on the rich side, which tends to correlate with higher earnings-window IV expansion as the market debates whether forward growth supports the multiple.

What is a bear put spread on RGEN?

A bear put spread buys an at-the-money put and sells an out-of-the-money put at a lower strike for defined risk and defined reward bounded by the strike width.

Current RGEN snapshot

As of May 15, 2026, spot at $103.34, ATM IV 51.30%, IV rank 3.97%, expected move 14.71%. The bear put spread on RGEN 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 34-day expiry.

Why this bear put spread structure on RGEN specifically: RGEN IV at 51.30% is on the cheap side of its 1-year range, which favors premium-buying structures like a RGEN bear put spread, with a market-implied 1-standard-deviation move of approximately 14.71% (roughly $15.20 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated RGEN expiries trade a higher absolute premium for lower per-day decay. Position sizing on RGEN should anchor to the underlying notional of $103.34 per share and to the trader's directional view on RGEN stock.

RGEN bear put spread setup

The RGEN bear put spread below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With RGEN near $103.34, the first option leg uses a $105.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed RGEN chain at a 34-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 RGEN shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Put	$105.00	$6.85
Sell 1	Put	$100.00	$3.98

RGEN bear put spread risk and reward

Net Premium / Debit: -$287.50
Max Profit (per contract): $212.50
Max Loss (per contract): -$287.50
Breakeven(s): $102.13
Risk / Reward Ratio: 0.739

Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-put strike minus net debit.

RGEN bear put spread payoff curve

Modeled P&L at expiration across a range of underlying prices for the bear put spread on RGEN. 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 Spot	P&L at Expiration
$0.01	-100.0%	+$212.50
$22.86	-77.9%	+$212.50
$45.71	-55.8%	+$212.50
$68.55	-33.7%	+$212.50
$91.40	-11.6%	+$212.50
$114.25	+10.6%	-$287.50
$137.10	+32.7%	-$287.50
$159.95	+54.8%	-$287.50
$182.79	+76.9%	-$287.50
$205.64	+99.0%	-$287.50

When traders use bear put spread on RGEN

Bear put spreads on RGEN reduce the cost of a bearish RGEN stock position by selling a lower-strike put; suited to moderate-decline theses where price reaches but does not vastly exceed the short strike.

RGEN thesis for this bear put spread

The market-implied 1-standard-deviation range for RGEN extends from approximately $88.14 on the downside to $118.54 on the upside. A RGEN bear put spread caps both the risk and the reward of a bearish position; relative to an outright long put on RGEN, the spread reduces the cost basis but limits the maximum profit to the strike width minus net debit. Current RGEN IV rank near 3.97% sits in the lower third of its 1-year distribution, where IV often re-expands toward the mean; this favors premium-buying structures and disadvantages premium-selling structures on RGEN at 51.30%. As a Healthcare name, RGEN options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to RGEN-specific events.

RGEN bear put spread positions are structurally moderately bearish; 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. RGEN positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move RGEN alongside the broader basket even when RGEN-specific fundamentals are unchanged. Long-premium structures like a bear put spread on RGEN are particularly exposed to IV-crush risk through scheduled events (earnings, FDA decisions, central-bank meetings) where IV typically contracts post-event regardless of the directional outcome. Always rebuild the position from current RGEN chain quotes before placing a trade.

Frequently asked questions

What is a bear put spread on RGEN?: A bear put spread on RGEN is the bear put spread strategy applied to RGEN (stock). The strategy is structurally moderately bearish: A bear put spread buys an at-the-money put and sells an out-of-the-money put at a lower strike for defined risk and defined reward bounded by the strike width. With RGEN stock trading near $103.34, the strikes shown on this page are snapped to the nearest listed RGEN chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are RGEN bear put spread max profit and max loss calculated?: Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-put strike minus net debit. For the RGEN bear put spread priced from the end-of-day chain at a 30-day expiry (ATM IV 51.30%), the computed maximum profit is $212.50 per contract and the computed maximum loss is -$287.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a RGEN bear put spread?: The breakeven for the RGEN bear put spread priced on this page is roughly $102.13 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 RGEN market-implied 1-standard-deviation expected move is approximately 14.71%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a bear put spread on RGEN?: Bear put spreads on RGEN reduce the cost of a bearish RGEN stock position by selling a lower-strike put; suited to moderate-decline theses where price reaches but does not vastly exceed the short strike.
How does current RGEN implied volatility affect this bear put spread?: RGEN ATM IV is at 51.30% with IV rank near 3.97%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.