Alex Mercer: Welcome to the Ledger Recap for Friday, April 17th. I’m Alex Mercer, and as always, we’re here to look at the tape. We don’t hide from the numbers; we grade the portfolio so we can refine the algorithm. Joining me is our lead analyst, Marcus Webb. Marcus, a busy week in the markets.

Marcus Webb:  Busy is one way to put it, Alex. It was a chaotic session. But before we dive into the wreckage, let’s be clear on how we’re accounting for this. We track in prediction market units. If we buy a contract at 60 cents, we’re risking 0.60 units to win 0.40. It’s pure risk-based accounting. No fluff, just the price of the shares.

Alex Mercer: Exactly. Let’s look at the scorecard. For this session, we risked 9.61 units across 28 positions. We finished 13-14 with one push. Total return? Plus 3.2 units. 

Marcus Webb:  Look, Alex, I’ll be the first to say it: plus 3.2 units on a sub-.500 record is... it’s a gift. We’re only in the green because our entry prices were disciplined. We bought a lot of volatility at 30 and 40 cents. But frankly? We left a lot of alpha on the table, and we caught some breaks on settlement that we shouldn’t count on next time.

Alex Mercer: Let’s get into the film room. Start with Houston versus Seattle. We took a position on the Houston moneyline at 40 cents. They fell 2 to 6. What happened to the thesis?

Marcus Webb: The thesis was that Houston’s top-of-the-order would exploit Seattle’s reliance on high-velocity fastballs. But the systemic failure was Houston's command. Their starter couldn't find the zone, which forced the bullpen into high-leverage situations by the fourth inning. That left the door wide open for Seattle's Josh Naylor, who capitalized on a fatigued relief core.  And Alex, this is where the market advantage comes in. When it was 4-2 in the 7th, those Houston shares were still trading around 12 cents. In a traditional book, you’re trapped. Here, we could have mitigated the loss by selling out, but we held to zero. That’s a discipline error.

Alex Mercer: Fair. Now, let’s talk about a win where the price looked off. Detroit versus Kansas City. We had two positions: Detroit moneyline at 50 cents and Detroit minus 1.5 at 33 cents. Both settled as wins in a 10-9 shootout. 

Marcus Webb: Right. The market mispriced the volatility of the Detroit bats. We saw a systemic mismatch—Kansas City’s pitching staff has a high fly-ball rate, and the atmospheric conditions in Detroit were primed for carry. But let’s do the Aggressive Alpha Review. We bought the moneyline at 50 cents—essentially a coin flip. Detroit put up 10 runs. If we had the conviction that the Detroit offense was that undervalued, we should have been looking at alt-lines or even higher-probability shares at 65 cents. By staying at the 50-cent mark, we missed out on about 0.4 units of potential alpha. We were right, but we were too safe.

Alex Mercer: I’m seeing a pattern here. Dallas versus Toronto in the NHL. We bought Dallas minus 1.5 shares at 39 cents. It settled as a win at 6-5. Marcus, that’s a one-goal margin. 

Marcus Webb:  It’s a settlement miracle, Alex. The market gave us the win, but the logic didn’t hold. We bought the spread expecting defensive suppression from Dallas. Instead, they got into a track meet. We have to be honest: the "Missed Alpha" here is actually "Negative Alpha." We over-leveraged on a margin that didn't exist. We got paid, but the algorithm needs to flag that as a "lucky" settlement, not a "correct" one.

Alex Mercer: Which brings us to our Strategic Evolution. Looking at this 13-14-1 run, what are we changing in the playbook?

Marcus Webb: It’s all about Conviction Calibration. We’re hitting these 30-cent and 40-cent contracts at a high enough clip to stay profitable, but our unit sizing is too flat. Moving forward, the new rule is: if the implied probability is under 40% but our internal model has it at 55% or higher, we aren't just buying shares—we're scaling the position. We’re also implementing a "90-cent exit" rule. If our position hits a 90% implied probability and the game-state is volatile—like that Detroit game—we trade out. We don’t need the last 10 cents if it means risking the whole unit on a late-game collapse.

Alex Mercer: Iron sharpens iron. We’re up 19.4 units on the season, but there’s plenty of room to tighten the screws. Before we go, remember: the positions discussed are based on real-time market prices at the time of entry. 

Opinions expressed are for informational purposes only. Bet responsibly.