💰 AMPX $2.4M Short Put Income — Whale Collects 14-Month Premium at $17, Willing to Own at $11.38 Basis
Published: May 12, 2026 | Ticker: AMPX | Exchange: NYSE | Sector: Industrials / Battery Technology
⚡ Quick Take
A single institutional trader just collected $2.4 million in premium by selling 4,300 June 17, 2027 $17 put contracts on Amprius Technologies (AMPX) — not as a bearish bet, but as a premium-collection income trade on a high-growth silicon-anode battery platform.
This is a Sell to Open (STO) transaction. The trader received cash upfront and now has 14 months for AMPX to stay above $17. If the puts expire worthless (the maximum profit scenario), the whale keeps the entire $2.4M. If assigned, the effective cost basis drops to approximately $11.38 per share — roughly 38% below the current spot price of $18.39.
Key points:
- 🟢 Income trade, not bearish — STO means premium was collected, not paid. The directional lean is bullish-to-neutral.
- 🛡️ 38% downside buffer — effective basis at $11.38 implies the institution is comfortable owning AMPX at a price implying roughly a 52-week-low re-test.
- 📅 14-month time cushion — the June 2027 LEAP expiration provides substantial runway for AMPX's defense and automotive revenue ramp to play out.
- 🔋 Growth story intact — Q1 2026 revenue surged 153% YoY, FY2026 guidance raised to ≥$130M, and ~$500M in U.S. defense orders underpin the thesis.
- 📈 Analyst consensus Strong Buy — average 12-month price target $20.17; Roth Capital raised to $22 on May 8, 2026.
🏭 Company Overview
Amprius Technologies (NYSE: AMPX) is a silicon-anode lithium-ion battery developer and manufacturer headquartered in Fremont, California. The company's proprietary SiCore platform uses silicon nanowire anode architecture to deliver industry-leading energy density — enabling longer flight times for drones, lighter batteries for defense applications, and superior range for electric vehicles.
| Attribute | Detail |
|---|---|
| Exchange | NYSE |
| Sector | Industrials / Capital Goods — Battery Technology |
| Market Cap | ~$2.5 billion |
| 52-Week Range | $2.32 – $22.80 |
| Current Price (May 12, 2026) | ~$18.39 |
| YTD Performance | ~+8x off 52-week lows |
Business model pivot: In January 2026, Amprius terminated its costly 15-year Brighton, Colorado manufacturing lease (eliminating >$110M in future obligations) and shifted to a capital-light contract-manufacturing model with access to >2.0 GWh annual SiCore capacity through partners including the Amprius Korea Battery Alliance. This pivot dramatically de-risked the balance sheet and freed capital for growth.
Customer base: AeroVironment, L3Harris, Teledyne FLIR (defense/drone), Airbus subsidiary AALTO (Zephyr HAPS stratospheric platform), and a new premier Chinese light-EV manufacturer (scooters, three-wheelers, motorcycles).
📋 Trade Detail
| Field | Value |
|---|---|
| Time | 13:51:19 ET, May 12, 2026 |
| Symbol | AMPX |
| Buy / Sell | SELL |
| Call / Put | PUT |
| Expiration | June 17, 2027 |
| Strike | $17.00 |
| Volume | 4,300 contracts |
| Open Interest (prior) | 1 |
| Vol / OI | 4,300x |
| Per-Contract Premium | $5.62 |
| Total Premium Collected | ~$2.4 Million |
| Order Type | STO — Sell to Open |
| Strategy | Short Put (premium collection) |
This trade was executed with essentially zero existing open interest at this strike, meaning the entire 4,300-lot block is a new position opening — not a closing trade. The 4,300x volume-to-OI ratio flags this immediately as unusual institutional activity.
View the option chain for this contract: AMPX June 2027 $17 Put
💵 STO Income Math
Understanding the economics of a short put is essential before interpreting the trade's directional signal.
Premium Collection Breakdown
| Metric | Calculation | Value |
|---|---|---|
| Contracts sold | — | 4,300 |
| Shares per contract | 100 | — |
| Total synthetic exposure | 4,300 × 100 | 430,000 shares |
| Per-contract premium | — | $5.62 |
| Total premium collected | 4,300 × $5.62 × 100 | $2,416,600 |
| Strike price | — | $17.00 |
| Effective assignment basis | $17.00 – $5.62 | $11.38 |
| Spot price at trade | — | $18.39 |
| Discount to spot if assigned | ($18.39 – $11.38) / $18.39 | ~38.1% |
Profit / Loss Scenarios at Expiration (June 17, 2027)
| AMPX Price at Expiry | P&L per Share | Total P&L (430,000 shares) | Outcome |
|---|---|---|---|
| ≥ $17.00 | +$5.62 | +$2,416,600 | Puts expire worthless — maximum profit |
| $15.00 | +$3.62 | +$1,556,600 | Partial profit, puts ITM but breakeven not reached |
| $11.38 (breakeven) | $0.00 | $0.00 | Breakeven — all premium offset by assignment loss |
| $10.00 | –$1.38 | –$593,400 | Net loss begins |
| $5.00 | –$6.38 | –$2,743,400 | Deep loss — catastrophic equity move required |
| $0.00 | –$11.38 | –$4,893,400 | Theoretical maximum loss (stock to zero) |
Maximum profit: $2,416,600 — achieved if AMPX closes at or above $17.00 on June 17, 2027.
Breakeven: $11.38 per share — 38.1% below spot. AMPX would need to return to levels near (but above) its 52-week low of $2.32 for the trade to suffer meaningful loss.
Maximum loss: Theoretically $11.38 per share × 430,000 shares = ~$4.9M if AMPX goes to zero. In practice, a margin-managed institution would likely close or roll long before that point.
📊 Price Chart — YTD Context
AMPX has staged a remarkable recovery, trading roughly 8x off its 52-week lows of $2.32. The current spot of ~$18.39 sits well above the $17 short put strike, and the effective basis of $11.38 would require a near-wipeout of the entire 2026 rally to put the whale underwater on the position.
The YTD chart shows strong institutional accumulation with multiple gap-ups on fundamental catalysts — the FY2025 earnings print in March 2026 and the Q1 2026 beat in May 2026. The stock has traded in a range of approximately $14–$22 over the past three months, suggesting the $17 strike sits at the lower end of the current trading channel.
🎯 Gamma S/R Levels — Where Price Is Anchored
Based on current open interest and gamma exposure (GEX) data as of May 12, 2026 (spot: $18.75):
Key Support Levels (GEX-derived):
| Strike | Net GEX | Total GEX | Distance from Spot |
|---|---|---|---|
| $18.50 | 0.069 | 0.159 | –1.3% |
| $18.00 | 1.886 | 4.826 | –4.0% (major) |
| $17.00 | 0.505 | 2.552 | –9.3% |
| $16.00 | –0.395 | 1.677 | –14.7% |
| $15.00 | –0.921 | 2.128 | –20.0% |
Key Resistance Levels (GEX-derived):
| Strike | Net GEX | Total GEX | Distance from Spot |
|---|---|---|---|
| $19.00 | 1.379 | 3.066 | +1.3% (nearest cap) |
| $19.50 | –0.007 | 0.188 | +4.0% |
| $20.00 | 2.132 | 5.700 | +6.7% (major) |
| $21.00 | –0.073 | 2.106 | +12.0% |
| $22.00 | 1.119 | 2.303 | +17.3% |
GEX Bias: Bullish — total call GEX (21.5) roughly doubles total put GEX (11.1), indicating dealer gamma positioning skews toward supporting upward price drift. The $18.00 strike is the heaviest support node; the $19.00–$20.00 band is the near-term ceiling.
The $17.00 strike — precisely where the whale sold puts — also shows meaningful GEX concentration (total 2.55), which reinforces it as a structural floor in the options market. Market makers with gamma exposure at $17 have an incentive to defend that level, adding a soft floor just below the short put strike.
📐 Implied Move — Near-Term Options Pricing
Current implied move data (as of May 12, 2026, spot: $18.78):
| Timeframe | Expiry | Days | Implied Move % | Implied Move $ | Upper Range | Lower Range |
|---|---|---|---|---|---|---|
| Weekly / Monthly OPEX | May 15, 2026 | 3 | ±6.56% | ±$1.23 | $20.01 | $17.55 |
| Quarterly Triple Witch | June 19, 2026 | 38 | ±35.67% | ±$6.70 | $25.48 | $12.08 |
Key observations:
- The weekly implied move of ±6.56% to the May 15 OPEX is elevated — options market is pricing meaningful near-term volatility, likely reflecting the just-reported Q1 2026 earnings and the stock's recent gap higher.
- The lower bound of the weekly implied range ($17.55) sits just above the $17 short put strike, suggesting near-term support at the strike level.
- For the June 19 quarterly expiry, the options market prices a range of $12.08–$25.48 over 38 days — a wide band reflecting AMPX's high realized volatility. The June 2027 LEAP gives the whale 14 months to clear this near-term noise.
- The 35.67% implied move to June OPEX compresses significantly over the 14-month LEAP horizon, providing meaningful time-value decay (Theta) tailwind for the short put holder.
🔥 Catalyst Deep-Dive
✅ Q1 2026 Earnings — Fundamental Inflection Point
Per the Amprius Q1 2026 press release and the Q1 2026 10-Q:
- Revenue: $28.5M in Q1 2026, up 153% YoY from $11.3M
- GAAP Gross Margin: +20% in Q1 2026 vs. –21% a year prior — the GM inflection is the most important number in the print
- Net loss: $5.0M, down from $9.4M YoY — meaningful operating leverage
- FY2026 guidance raised to ≥$130M revenue, net loss <$8.0M, adj. EBITDA ≥$4.0M, capex <$10.0M
Per Investing.com's Q1 2026 recap, management indicated confidence in maintaining positive gross margins through the FY.
A company growing revenue 153% YoY, flipping gross margin by 41 percentage points, and guiding to near-EBITDA-breakeven presents a fundamentally different risk profile than its 2024-era cash-burn days — exactly the backdrop that makes a 14-month short put at a 38% discount compelling.
🏗️ Capital-Light Pivot — Brighton Lease Exit
On January 30, 2026, Amprius terminated its 15-year Brighton, Colorado manufacturing lease for a one-time $20M payment, eliminating more than $110M in future lease obligations, per the 2025 10-K filing.
The company now operates a capital-light model with >2.0 GWh of annual SiCore production capacity through global contract manufacturers. Capex guidance of <$10M for FY2026 is a fraction of what a vertically-integrated manufacturer would require at this revenue scale, preserving cash for growth rather than asset maintenance.
🛡️ Defense Orders and NDAA-2028 Positioning
Amprius disclosed approximately $500M in cumulative U.S. defense orders alongside the Q1 print. The February 2026 Nanotech Energy domestic manufacturing partnership positions the company as an NDAA-FY2026-compliant supplier, critical for long-term defense contracts.
Per Manufacturing Dive, NDAA Section restrictions on foreign-entity batteries in U.S. defense platforms take effect January 1, 2028 — creating a procurement urgency cycle beginning in 2H 2026 as program managers lock in multi-year sourcing. Existing customers AeroVironment, L3Harris, and Teledyne FLIR are among the largest drone integrators in the U.S. defense ecosystem.
Per Seeking Alpha's NDAA analysis, Amprius has an approximately two-year window to lock in incumbent status before the 2028 cutoff triggers a structural moat for qualified domestic suppliers.
🚗 Automotive Wins — EV and Light-EV Expansion
On March 25, 2026, Amprius secured a $21M purchase order from a new Chinese light-EV customer (scooters, three-wheelers, motorcycles) per BusinessWire. The market's initial 6.8% reaction down on China exposure concerns per Simply Wall St has since been absorbed, with the stock recovering and exceeding those levels.
On the passenger EV side, A-Sample cells were shipped to the U.S. Advanced Battery Consortium (USABC) testing 360 Wh/kg — well above the USABC 275 Wh/kg EOL target, a technical proof point that could convert into large-scale automotive supply agreements.
Per Aviation Week, the SiCore platform is also targeted at eVTOL OEMs in the Joby/Archer-class certification pipeline.
📊 Analyst Sentiment — Strong Buy Consensus
- Consensus: Strong Buy (5 of 6 Strong Buy, 1 Buy) per MarketBeat AMPX forecast
- Average 12-month price target: $20.17 (range $18–$22)
- Roth Capital: raised target to $22 from $20 on May 8, 2026 per Public.com AMPX forecast
- H.C. Wainwright (Amit Dayal): reiterated Buy at $18
A Roth Capital $22 target published four days before this $17-strike short put suggests the whale is writing insurance at levels that even the most conservatively priced analyst target ($18 by H.C. Wainwright) sits comfortably above.
💡 Trading Ideas
1. 🟢 Mirror the Whale — Short Put (Accredited / Margin Accounts Only)
Position: STO AMPX June 2027 $17 Put
- Collect approximately $5.62 per contract in premium
- Maximum profit if AMPX ≥ $17 at expiry: full credit retained
- Effective basis if assigned: $11.38
- Requires margin approval for cash-secured or naked puts; capital-intensive
- Best suited for investors who are genuinely willing to own AMPX at $11.38
Risk: If AMPX falls significantly below $17, early assignment or forced closure may be required. This is an undefined-risk short premium trade.
2. 🛡️ Defined-Risk Alternative — Bull Put Spread
Position: Buy the AMPX June 2027 $12 Put / Sell the AMPX June 2027 $17 Put
This bull put spread captures most of the income while capping the maximum loss — ideal for retail traders who want exposure to the same directional thesis with defined, limited downside.
| Metric | Approximate Value |
|---|---|
| Net credit received | ~$4.20–$4.80 per share (est.) |
| Maximum profit | Credit received (AMPX ≥ $17 at expiry) |
| Maximum loss | $5.00 spread width – credit = ~$0.20–$0.80 per share |
| Breakeven | ~$16.20–$16.80 (strike minus net credit) |
| Risk / Reward | Favorable — max loss is defined and modest vs. max gain |
| Capital required | Spread width × 100 = ~$500 per spread |
The spread retains the bullish-to-neutral income thesis while eliminating the margin requirements and tail risk of a naked short put. The $12 long put also provides a structural floor — AMPX would need to lose >35% from today's levels AND blow through 52-week support to cause maximum loss.
3. 📈 Speculative Long — Leveraged Upside Play
Position: Buy AMPX June 2027 $22 Calls (OTM LEAP)
For traders who want to express a more aggressively bullish view (AMPX re-tests or exceeds the $22.80 52-week high), OTM LEAP calls offer leveraged upside with limited, defined downside (premium paid).
- Premium cost: approximately $3.00–$5.00 per contract (estimated, verify current pricing)
- Breakeven: approximately $25–$27 at expiry
- Thesis: NDAA-2028 procurement surge, FY2026 guidance beat, and automotive conversion drive AMPX toward Roth's $22 target and beyond
- Risk: if AMPX fails to break out, the full premium paid is lost; time decay (Theta) works against long option holders
This is the most speculative of the three approaches and is appropriate only for risk capital that can sustain a 100% loss on the options premium.
⚠️ Risk Factors
Investors and traders should carefully consider the following risks before replicating this position:
1. Commercial-Scale Execution Risk The capital-light model depends entirely on contract manufacturers delivering SiCore cells at volume and yield targets. Any manufacturing shortfall flows directly into gross margin. Per the 2025 10-K, Amprius is still early in scaling its Korea Battery Alliance capacity, and execution risk is real.
2. Cash Burn and Liquidity Despite Q4 2025 adj. EBITDA turning positive, GAAP net losses continue. FY2026 guides to up to $8.0M net loss per Amprius IR. A guidance miss or acceleration in cash burn could pressure the stock materially.
3. Competitive Landscape Silicon-anode and solid-state battery peers — including QuantumScape, Solid Power, Sila Nanotechnologies, Group14 Technologies, and Enovix — all target overlapping aviation, defense, and EV verticals. A breakthrough by a competitor could commoditize the SiCore value proposition.
4. Valuation Sensitivity At ~$2.5B market cap on ~$130M FY2026 revenue guidance, AMPX trades at approximately 19x forward sales per Simply Wall St. Any revenue guidance reset, even modest, could trigger a significant multiple compression — a 10x revenue multiple would imply a ~$7 stock, well below the $11.38 effective basis.
5. Geopolitical and China Exposure The $21M Chinese light-EV order introduces demand-cycle sensitivity and geopolitical risk. Tariff escalations, supply-chain restrictions, or a slowdown in the Chinese EV market could reduce near-term revenue visibility.
6. NDAA Timeline Slippage If Congressional action delays or modifies the January 1, 2028 NDAA battery-content cutoff, the urgency of defense procurement decisions would ease, potentially deferring a key demand catalyst.
7. Short Put Assignment Risk If AMPX falls through $17 before June 2027, the short put can be assigned early (American-style), requiring the seller to purchase 430,000 shares at $17. At current margin rates, this represents a significant capital commitment that may require position management if the stock trends downward.
🏁 Bottom Line
This trade is a textbook institutional premium-collection income position — not a directional bearish bet. The whale sold time value: 14 months of optionality on a high-volatility, high-growth battery technology name, in exchange for $2.4M in upfront cash.
The bull case is straightforward: AMPX stays above $17 through June 2027 (it is currently $18.39, roughly 8% above the strike), the puts expire worthless, and the institution keeps the full premium. Given that the current spot is already above the strike, the stock would need to fall approximately 7.6% and stay there for 14 months — through multiple earnings prints, NDAA procurement cycles, and automotive ramp milestones — for this trade to threaten the maximum profit outcome.
The effective basis of $11.38 provides a substantial margin of safety: the institution is effectively saying "I am comfortable owning $430,000 worth of AMPX at 38% below today's price." With a Strong Buy consensus averaging $20.17, a $22 Roth Capital target, $500M in defense orders, and a gross margin that just flipped from –21% to +20%, the fundamentals support that confidence.
For retail investors, the $17/$12 bull put spread offers the same directional exposure with defined, capped risk and manageable capital requirements — the pragmatic way to trade alongside the whale without the margin intensity of a naked short put.
📌 Disclosure
Options trading involves substantial risk of loss and is not appropriate for all investors. Short puts involve the obligation to purchase shares at the strike price and require margin authorization. This analysis is for informational and educational purposes only and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Past performance is not indicative of future results. All options strategies described involve risk of loss up to and including total loss of capital. Implied volatility, Greeks, and probability estimates are based on market data as of May 12, 2026 and may change materially. Always consult a licensed financial professional before implementing any options strategy. The unusual options activity described reflects publicly available trade data and does not imply insider knowledge or guarantee future price movements.