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Phoenix · Backtest Studio

Backtests in plain English.Results down to the stamp duty.

Describe a strategy the way you’d explain it to a colleague. Phoenix explores the data, writes the script, matches every order against history and hands back PnL net of brokerage, STT, GST and exchange charges.

Sign in to the StudioSee how a run works

For teams on a Zentropy account.

Itemised per runBrokerage,  STT/CTT,  Txn charge,  GST,  SEBI,  Stamp,  IPFT

You: Backtest selling an ATM NIFTY weekly straddle at 9:20 AM with a 25% stop loss per leg, over the last 2 months.

PhoenixWorked for 41s · 4 steps
  1. Exploring data2.1s
  2. Writing script6.4s
  3. Matching orders28.7s
  4. Reviewing results3.9s

Net PnL +₹1,84,350 over 42 trading days, after ₹11,070 in charges. The 25% stop on each leg held the worst stretch, days 17 to 22, to −4.12%.

Run 2Completed
Equity

₹11,84,350+18.44%

Net PnL
+₹1,84,350
Total return
+18.44%
Max drawdown
−4.12%
Sharpe ratio
1.86
Win rate
61.9%
Trading days
42
Illustrative run. Backtested results are hypothetical.

Start from a sentence

A new chat opens with these four. Pick one, change the numbers, send it.

  • 01Mean reversion

    Backtest a NIFTY mean reversion strategy for the last 60 days: buy when price closes 2% below the 20-day average, exit at the average.

  • 02Moving-average crossover

    Backtest a 9/21 EMA crossover on BANKNIFTY futures over the last 3 months with a 1% stop loss.

  • 03Opening range breakout

    Backtest a 15-minute opening range breakout on NIFTY for the last 30 trading days, square off by 3:15 PM.

  • 04Options straddle

    Backtest selling an ATM NIFTY weekly straddle at 9:20 AM with a 25% stop loss per leg, over the last 2 months.

01. How a run works

You describe it, the agent does the legwork.

Each message starts a run. While the agent works, the chat shows the stage it is on; when it replies, the steps fold into a timed list above the answer.

  1. Step 1: Exploring data

    Reads the instruments, dates and fields the idea needs before writing anything.

    2.1s in the run above

  2. Step 2: Writing script

    Turns the description into a strategy script.

    6.4s in the run above

  3. Step 3: Matching orders

    Every signal becomes an order, matched against historical prices.

    28.7s in the run above

  4. Step 4: Reviewing results

    Checks the run and reports PnL, drawdown and trade stats back in the chat.

    3.9s in the run above

Human in the loop

When it needs a decision, it asks.

It asks instead of guessing. Suggested answers are a click away, and every question also takes a free-form reply.

02. Results

Every run, itemised.

Each attempt is kept as an iteration. Change one thing, run it again, and compare performance and PnL across iterations without losing the earlier ones.

Iterations · 3

NIFTY weekly straddle

  1. #1

    Short straddle, no stop

    CompletedTook 38s

    −₹38,920
  2. #2

    Add 25% SL per leg

    CompletedTook 41s

    +₹1,84,350
  3. #3

    Shift entry to 9:30

    ProcessingMatching orders · 19s

    Net PnL pending

Charges · Run 242 days · 168 orders

NIFTY weekly straddle

Premium turnover
₹75,00,000
Sell
₹38,47,710
Buy
₹36,52,290
Brokerage
₹3,360
168 orders × ₹20
STT/CTT
₹3,848
on sell premium
Txn charge
₹2,627
GST
₹1,079
18% of brokerage, txn, SEBI
SEBI
₹8
Stamp
₹110
on buy premium
IPFT
₹38
Total charges
₹11,070

0.148% of premium turnover

Gross PnL
₹1,95,420
Less charges
−₹11,070
Net PnL
+₹1,84,350
Seven heads on premium turnover, with the same breakdown for every trade. Illustrative figures.
Performance · 12
  1. 01Net PnL
  2. 02Total return
  3. 03CAGR
  4. 04Sharpe ratio
  5. 05Sortino ratio
  6. 06Max drawdown
  7. 07Win rate
  8. 08Winning days
  9. 09Trading days
  10. 10Total trades
  11. 11Initial capital
  12. 12Final equity
Drawdown
Depth, peak, trough, recovery date and duration of the worst episode.
PnL components
Realized, unrealized, charges & taxes, and dividend.
Charts
Equity, cumulative net PnL, drawdown and PnL components, each scrubbable by day.
Tables
PnL breakdown, also per instrument. Orders, trades and charges by trade for every run.

03. The rest of the workspace

What else is in the sidebar?

Backtest Studio is the first item. The rest of the workspace is for runs, market snapshots and strategies.

  1. 01

    Dashboard

    Every backtest run in one table.

  2. 02

    Snapshots

    Capture the market state for a broker, account and strategy on a given market date.

  3. 03

    New backtest

    Start a standard run, or run against a snapshot you have already captured.

  4. 04

    Strategy builder

    A separate chat for working out a strategy until its structure is extracted.

  5. 05

    Strategy history

    Past strategy-builder sessions, searchable, ready to pick up where you left off.

04. Team plan

Plan

Team

For desks that research together.

Price
Pricing on request
Tell us about your desk and we will come back with a quote.
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Included

  • Backtest Studio with the strategy agent
  • Every iteration kept, with performance and PnL comparison
  • Orders, trades and itemised charges for every run
  • Market snapshots by broker, account and strategy
  • Strategy builder and strategy history
  • Multiple client accounts under one sign-in
  • Secure sign-in with multi-factor authentication

Send the first prompt before the 9:15 open.

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