A 74% open position just rewrote our portfolio math

The week at a glance

IOVA is up 74% and we're still holding it. That number still looks strange to type, seven weeks in. The Relative Strength Engine flagged it on September 11th at $8.15, and it hasn't looked back — at least not yet. That's the headline of this week, even though the trade opened nearly two months ago. Here's the week in one breath: the system returned +4.89% against SPY's -0.22%, good for +5.11% of alpha. Cumulative alpha since day one now sits at +4.89%. We passed on one signal mid-week — a watchlist day where conditions weren't clean enough to pull the trigger. The trade table tells the fuller story:

Trades we closed this week

| Ticker | Engine | Opened | Entry | P&L | Alpha | Status | |--------|--------|--------|-------|-----|-------|--------| | CRNX (×14) | Relative Strength | Aug 5–Aug 31 | $83.93–$84.99 | +0.0% to +1.2% | -0.65% to +1.56% | Open | | TEAM | Relative Strength | Sep 9 | $179.86 | +4.46% | +3.51% | Open | | TEAM | Relative Strength | Sep 10 | $181.65 | +3.44% | +1.88% | Open | | IOVA | Relative Strength | Sep 11 | $8.15 | +74.42% | +73.72% | Open | | RNG | Relative Strength | Sep 14 | $69.55 | +9.46% | +8.84% | Closed | | TWST | Relative Strength | Sep 15 | $135.76 | +38.97% | +37.36% | Open | | HURN | Relative Strength | Sep 29 | $158.90 | +2.05% | +1.33% | Open | | HTFL | Relative Strength | Sep 30 | $50.49 | -2.32% | -3.24% | Open | | TEAM | Relative Strength | Oct 1 | $186.31 | +0.85% | +0.11% | Open | | CAI | Relative Strength | Oct 2 | $28.63 | -1.15% | -1.15% | Open | The one closed trade this week was RNG. The Relative Strength Engine entered at $69.55 on September 14th and exited at $73.00 on September 29th — a +9.46% gain with +8.84% alpha over the market. The status reads 'closed_stop,' meaning the position came off when our trailing stop was hit. That's not a bad thing. The trade moved in our direction, we locked in gains at a reasonable level, and the engine did exactly what it's supposed to do: ride strength until the momentum breaks. The two fresh losers deserve honesty. HTFL opened September 30th at $50.49 and sits at -2.32% right now, -3.24% versus SPY. It hasn't confirmed yet, and we're watching it closely. CAI entered Friday at $28.63 and is -1.15% on day one. A slightly red first day isn't alarming — but it isn't comfortable, either. CRNX is the position we've been building since early August — fourteen separate Relative Strength Engine entries ranging from $83.93 to $84.99, the oldest leg now 59 days old. Most of the individual alpha numbers are small, some slightly negative, but the name hasn't broken down. The engine keeps liking it, so we keep entering. At some point that thesis either proves out or stops us out — and we'll know which soon enough. TWST is quietly doing something worth paying attention to: +38.97% in 18 days. IOVA is doing something louder. The win-rate stat in the synopsis block reads 0% because no closed trade has been a loser — we haven't closed a losing position yet. We don't expect that to stay true forever.

What we tuned this week

Nothing changed in the system parameters this week. No filters added, none removed. The Relative Strength Engine ran exactly as designed and added three new positions — HURN, HTFL, and CAI — plus a third TEAM entry at $186.31. When the system is working, you don't tune it. That's discipline, not confidence. The one call we made was skipping a signal mid-week where market-wide context felt too noisy. We don't override the engine often, and we don't do it lightly.

What we're cautious about next week

A few things are sitting on our radar heading into next week. IOVA at +74% is the obvious one — any meaningful reversal there starts compressing the portfolio return fast. We have a stop in place and we'll honor it. But a gap-down open on news is something no trailing stop can fully protect against on a low-float biotech, and we're not pretending otherwise. HTFL at -3.24% versus SPY on day three is worth watching carefully. If it doesn't firm up early next week, the engine will likely stop it out. That's fine — small loss, early exit, move on. CAI is in the same category: too new to judge, but we need to see it stabilize. The CRNX cluster is the slow-burn question. Fourteen legs, none of them big winners, held for nearly two months. The individual alpha numbers are mixed. If the stock starts sliding, we're unwinding a lot of positions at once — a known risk we accepted by following the engine's signals faithfully.

Looking ahead to Monday

Day 65. The portfolio looks nothing like it did at day one — heavier, more concentrated in a handful of outliers, and carrying two positions that have moved in ways that are genuinely hard to model for. That's how relative strength works when it works: you stay in things longer than feels comfortable, and occasionally one of them changes the math of the entire portfolio. Whether IOVA and TWST keep running or start giving back ground — that's the question next week gets to answer.