How to Analyze Your Alpaca Portfolio Beyond P&L

Alpaca Markets is a powerful platform for algorithmic trading. Its API is clean, its paper trading environment is excellent, and its commission-free structure makes it viable for high-frequency strategies that would be crushed by fees elsewhere.

What Alpaca is not is an analytics platform. It gives you a portfolio history endpoint, a P&L number, and a basic equity graph. That's where most traders stop. Here's what else you can get from your Alpaca data — and how to get it.

What Alpaca Actually Gives You

Alpaca's /v2/account/portfolio/history endpoint returns:

• Timestamps
• Portfolio value at each point
• Profit/loss in dollar terms
• Profit/loss as a percentage

The percentage figure (profit_loss_pct) is already time-weighted — it's computed by Alpaca to account for deposits and withdrawals. This is actually quite good: most brokers don't provide a properly adjusted return series at all.

But raw portfolio history alone doesn't tell you:

• Whether that return is good relative to the risk taken
• How your performance compares to a benchmark
• What your worst drawdown was and how long recovery took
• Which individual trades contributed most to your returns
• What your win rate and profit factor are across closed positions

The Analytics You're Missing

Sharpe Ratio

Alpaca doesn't compute your Sharpe ratio. You can calculate it from the portfolio history data:

Sharpe = (Annualized Return − Risk-Free Rate) / Annualized Std Dev of Daily Returns

For an active algorithmic strategy, you'd hope for a Sharpe above 1.0. Most strategies that feel like they're working are running between 0.5 and 1.2. It's rare to sustain above 2.0 without either a very short live history or very specific market conditions.

Max Drawdown

The max drawdown is the largest peak-to-trough decline in your equity curve. You can compute it from the portfolio value series by tracking the running maximum and finding the largest percentage below that peak.

A 15% drawdown sounds manageable. A 40% drawdown on a $200,000 account is $80,000 of paper loss — that's the kind of number that makes people turn off their bots at the worst possible moment.

Benchmark Comparison

Is your strategy actually generating alpha? Or are you just riding SPY beta with extra volatility?

The honest way to find out is to plot your cumulative return against a benchmark (SPY is standard) on the same timeline, starting from the same date. If SPY is up 18% and you're up 16% with twice the drawdown, you've underperformed after risk adjustment even though you "made money."

Round-Trip Trade Analysis

Alpaca's orders endpoint (/v2/orders) gives you all your fills. From this you can reconstruct closed trades — pairing buys with sells, calculating holding periods, and computing per-trade P&L. This tells you:

• Average win and average loss
• Win rate (% of trades that were profitable)
• Profit factor (gross profit / gross loss)
• Your best and worst individual positions
• Whether your wins or your losses are driving performance

How AlphaLens Does This Automatically

AlphaLens connects to your Alpaca account via read-only API key and computes all of the above without any manual work.

Setup takes under 2 minutes:

1. Go to Alpaca → API Keys → generate a paper or live key (read-only is sufficient)
2. In AlphaLens Settings → Connections → Add Alpaca connection → paste your key and secret
3. Your dashboard populates automatically

You get a metrics panel with Sharpe, Sortino, Calmar, and PSR. A drawdown chart overlaid on your equity curve. A monthly heatmap showing every month's return since inception. A round-trip trades table with per-trade analytics. And your portfolio plotted against any benchmark you choose.

One Thing to Know About Alpaca's Intraday Data

Alpaca provides minute-level portfolio history for the current day (period=1D with timeframe=1Min). AlphaLens uses this for the 1-day view, showing your intraday equity curve in Eastern Time. For all other periods, it uses daily bars.

This means if you're running an intraday strategy, AlphaLens can show you today's equity curve tick by tick — not just the end-of-day summary that most portfolio trackers show.

The Bottom Line

Alpaca gives you the raw data to build a serious analytics picture of your strategy. The portfolio history endpoint, the orders endpoint, and the account endpoint together contain everything needed for institutional-quality performance reporting.

Most traders never look beyond the headline P&L number. The ones who do — who understand their Sharpe ratio, who know their max drawdown, who analyze their trades rather than just their balance — tend to iterate faster and avoid the mistakes that kill strategies.

Connect your Alpaca account to AlphaLens to see the full picture.