Opened a QQQ $850 calendar call spread: STO -1× QQQ 850C Dec 17, 2027 at $38.79 (OptionStrat basis; live chain mid $38.88) / BTO +1× QQQ 850C Jan 21, 2028 at $42.00 (OptionStrat basis; live chain mid $42.25). Net debit $3.21/share ($321/contract). Max profit ~$2,799/contract at $850 on Dec 17 '27 (BSM at flat IV 28%: back-month residual TV at strike on Dec 17 = $31.20/share; max profit = ($31.20 − $3.21) × 100). Max loss $321 (= net debit). 1-contract sizing. Spot $691.70; IV ~28% (front 27.8%, back 28.2% — slight back-rich inversion, normal). IV at entry ~28%; 511 DTE on the short leg, 546 DTE on the long leg. AM-settled standard monthly, last trade Thursday 12/16 on the short leg.

Why This Structure

This is the higher-strike half of a paired QQQ calendar position — the companion $800 calendar is a separate trade-log entry covering the full structure deep-dive on calendars. The $850 strike sits 22.9% above current spot ($691.70) — even deeper OTM than the $800. The trade profits if QQQ rallies strongly through both strikes within 18 months.

Why such a deep OTM strike? The pair is structured to capture different parts of the probability distribution:

• $800 calendar: profits if QQQ rallies moderately (15%+ over 18 months)
• $850 calendar: profits if QQQ rallies strongly (23%+ over 18 months)

Both calendars profit if QQQ ends up near either strike at Dec 17 '27 — the tents overlap to create a wider profit zone than either alone (see the comparison section below for the combined payoff shape).

Pair: The $800 Calendar

This trade is one of a paired QQQ calendar position. Quick recap of the differences between the two legs of the pair:

Why the $850 is cheaper: Both calendars have the same expiry dates and same IV environment. The $850 strike is deeper OTM, so both legs carry less time value. The short leg basis ($38.79) is lower than the $800 short leg basis ($54.95) — that's the IV skew at work: deeper OTM strikes carry less premium.

Why the $850 has higher max profit (in absolute terms): Same calendar duration, similar back-month TV at strike (~$29.36 for $800 vs ~$31.20 for $850) — the difference is because the back-month residual TV depends on the strike price relative to the IV. At a deeper OTM strike, the absolute TV at the strike is slightly higher in this case because the strike price scales the TV calculation. Subtracting the smaller debit gives a higher absolute max profit.

Comparison: Pair Payoff Shape

The two calendars share identical expiry dates and IV environment, so their tent-shaped payoffs at Dec 17 '27 stack cleanly:

Combined characteristics:

• Max combined loss: −$701 (both calendars at max loss, happens if QQQ is way below $700 or way above $1,000 at Dec 17 '27)
• Max combined profit: ~$3,599 (both tents overlap to peak around $850; the $800 calendar is still positive and the $850 calendar is at its peak)
• Wider profit zone: anywhere from ~$800 to ~$920 produces positive combined P&L
• Highest absolute peak: at $850 (the $850 tent's peak dominates)

The pair is structurally similar to a call butterfly spread in shape (three peak zones, defined loss at the extremes) but constructed from time-spreads rather than verticals. The key advantage over a butterfly: the pair profits in a wider zone and the peak is higher than a butterfly at the same strikes.

Why two calendars beat one here

A single $800 calendar commits the position to QQQ ≈ $800. If QQQ rallies to $830, the position is at modest profit; if QQQ rallies to $880, it's at zero. The $850 calendar extends the profit zone upward — if QQQ rallies past $850, the higher strike is still making money. The two together capture a range of outcomes rather than a single point estimate.

Why two calendars might not beat one in other cases

With a strong conviction that QQQ will end at exactly one strike (e.g., the AI cycle tops out at $800), a single calendar at that strike is more efficient — same directional exposure, less debit. The pair is for when the desk doesn't know exactly where QQQ will land, just that it will land somewhere in a range.

Thesis

• Why QQQ, why now: QQQ has corrected ~7% from June highs (~$743 → $691.70). The correction has been orderly; the structural drivers (AI capex, mega-cap concentration, low-vol regime in tech) are intact. IV at 28% is moderate — not cheap (which would make premium-selling better) but not panic (which would make long-vol structures better).

• Why 18-month tenor: Most retail calendars are 30–60 DTE on the short leg. An 18-month calendar is a longer-duration thesis on QQQ reaching $850 within 18 months — a much wider window than typical. The back-month's residual TV at front expiry ($31.20/share for this trade) is substantial — almost 10x what a 30-day calendar would have.

• Why $850 strike specifically: This strike sits 22.9% above spot — outside the playbook's standard short-duration calendar band, but within the long-duration range. The $850 captures the upside of a strong rally; combined with the $800 calendar, the pair profits across the $800–$920 range at Dec 17 '27.

• Why a paired $800 calendar: A single $850 calendar commits the position to QQQ exactly at $850. By adding the $800 calendar, the profit zone extends downward — the pair captures QQQ rallies both moderate ($800 strike wins) and strong ($850 strike wins).

Risk

Position Payoff at Three Time Horizons

The chart above shows the position's P/L as a function of QQQ's price at three evaluation windows: now (entry, 511 DTE short), mid-life (~256 DTE on the short leg), and at short-leg expiry (Dec 17, 2027). The three curves diverge in a classic long-duration calendar pattern.

Read the chart:

• Spot $691.70 sits well below the strike ($850). At the current spot, the calendar is slightly negative (~−$15/contract on the now-curve, ~+$20/contract at the mid-curve peak) — the trade is currently near the entry debit.
• The peak (~$2,799) sits exactly at $850 at short-leg expiry.
• The curve falls off in both directions. Below $750, both legs have minimal intrinsic and the calendar is mostly the debit. Above $900, the short leg's intrinsic liability starts to dominate.
• The trade has a wide sweet spot near $850 at short expiry. Anywhere between roughly $835 and $870 produces positive P&L on the short-expiry curve.

Key levels on the chart:

• Spot $691.70 — current underlying; trade is currently near zero on the now-curve.
• Strike $850.00 — the peak of the tent on the short-expiry curve. ~$2,799 max profit at this price.
• ~$770 — below this, both legs OTM; P&L converges to max loss ($321 = debit).
• ~$930 — above this, short leg ITM; P&L drops back toward zero.
• Max profit $2,798.56 at $850 on Dec 17 '27 (BSM-derived).
• Max loss $321.00 at any price ≥$50 from strike at Dec 17 '27.

Paired Position: Combined P/L at Front-Expiry

The combined position's payoff at Dec 17 '27 shows this trade's payoff alongside the companion $800 calendar. The combined peak is at $849 (~$3,683) — the $850 calendar dominates there, while the $800 calendar is past its peak but still positive. Together they create a wider profit zone than either alone.

How the Trade Has Moved Against the Underlying

Over the last 30 days of trading, QQQ has corrected from a ~$743 high to $691.70. The strategy premium at the $850 strike has tracked the underlying down — at $691.70 spot with ~511 DTE on the short leg, the BSM-implied calendar premium at the $850 strike is roughly $2.65 (close to the entry debit of $3.21). The strike ($850) and net debit ($3.21) mark the reference levels; the chart uses a flat 28% IV across all dates for illustration, while live mark-to-market would show the IV term structure flexing through the period.

Greeks Snapshot (Black-Scholes, flat IV 28%)

Numbers computed at entry spot $691.70, current DTE (511 front, 546 back), IV flat at 28%, r=4.5%, no dividend yield.

Intraday Setup (entry)

• Pre-market context: QQQ closed Jul 23 at $691.70 (down ~7% from June highs near $743). IV term structure: front 27.8% / back 28.2% — slight back-rich inversion, normal for QQQ.
• Entry signal: Paired with the $800 calendar. The $850 strike adds the upside leg of the paired position. Same IV environment; same expiry dates.
• Execution: Limit order at $3.21 debit (OptionStrat basis). Filled at 11:59 AM ET. Live verification: front-month $850C live mid $38.88 vs OptionStrat $38.79 (0.2% gap, within tolerance); back-month $850C live mid $42.25 vs OptionStrat $42.00 (0.6% gap, within tolerance). Net debit live: $3.37 vs OptionStrat $3.21 — within tolerance, no live-execution savings.

Management Plan

• Open through Q3 2027 (~390 DTE on short leg): Hold. Theta is slow but persistent. No major event risk in this window.
• Q4 2027 (~90–30 DTE on short leg): Front-month theta accelerates. Watch the spot-to-strike corridor closely. If QQQ closes between $800 and $900 in any weekly bar, the position is in the profit zone — consider closing at 50% of max profit ($1,400/contract).
• Q4 2027 last 90 days: Close 90 days before Dec 17 '27 short-leg expiry.
• Stop loss: 2× debit ($642/contract cost to close) OR QQQ closes below $620 at any point.
• Joint management with the $800 calendar: Both trades share management deadlines. Set GTC orders at 50% of individual max profit; the trades can be closed independently based on which strike QQQ is approaching.

Status

Lessons

• For the playbook: A paired-calendar position (two strikes, same expiry) is a non-standard structure that the playbook doesn't directly cover. The mechanics are the same as a single calendar but the payoff shape becomes a "double tent" — closer to a butterfly in shape but with longer-dated optionality. Future playbook entry on paired calendars would be useful, especially around strike-spacing rules (here $50 = ~7% of spot) and combined max-loss position sizing.

Disclosure

The desk may hold the positions, options, or underlyings mentioned in a trade-log entry at the time of publication; positions are disclosed in the trade-log entry itself. Nothing on this site is investment advice.

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