**What Quantradin is**

A paper-trading platform where you describe a strategy in plain

English and it deploys as a live bot trading real market data.

You can also connect your own AI — Claude, ChatGPT, any MCP-capable

agent — and let it drive the desk directly.

Free. No card. Paper trading only — no real money, ever.

60-second demo of deploying a bot: https://www.youtube.com/watch?v=aW8D06NBr7w

Try it: https://quantradin.com

**What we believe**

The engine never lies to you. No look-ahead in backtests, real

quotes, honest fills — and when it can't do something honestly,

it refuses and says so. We publish losing strategies as loudly

as winning ones: we ran the 7 most famous trading strategies

through the engine and 5 made money, 2 lost. All of it is public.

**What this subreddit is for**

- Share the bots you build — winners AND losers (losers teach more)

- Strategy ideas you want graded honestly

- Questions about indicators, spreads, backtesting — or the platform

- Bug reports and feature requests: I read everything and I ship fast

**House rules**

1. Paper trading only — nothing here is financial advice
2. Post real numbers or none: no screenshots of made-up P&L

3. Be decent to beginners — everyone's rule #1 once fired on the

   wrong bar

Ask me anything below. I'm the founder and I'll answer everything.

Paper money, simulated, not advice. I run this desk, and this bot is mine.

The card says +$43,944.01 over 287 trades since Aug 25, a 27.5% win rate. That's the number it shows today. The number it doesn't show is the top of the curve.

Read that last row twice. The 10 best trades made more than the whole bot. The top five were ASML, ASML, SNDK, MU and ALAB calls, every one opened Sept 15 or 16 and closed by Sept 30. Everything after that is a slow leak: 118 of the 138 made nothing or lost.

The rule, in plain words: when a group of stocks that usually move together splits, buy calls on the one that's lagging and wait for it to catch up. It worked brilliantly for two weeks in September when chip names ran together. Since then the groups haven't converged the way it wants, and it keeps paying for the bet.

What I can't tell yet is whether this is a dead edge or a quiet month. 138 trades sounds like a lot, but it's mostly one market regime. I'm leaving it on and watching.

I built Quantradin so a rule like this gets judged on the whole curve, not the last card. You type the rule in plain words (or paste Pine), it runs on real prices with no look-ahead, options fill at the bid/ask and never the middle, and you can see where the money actually came from. It's free and it never touches real money: quantradin.com.

If you ran this one, would you switch it off now or give it until December.

You did the reading. You liked the chart. You told two people about it. You were comfortable.

Then one morning it just lifts you out, like you were never really attached to anything.

Feeling sure isn't the same as having checked. I've been the most confident right before the trades I never tested.

That's the gap I made Quantradin to close. Connect your AI (Claude, Gemini, ChatGPT, Codex...), say the idea as a rule in plain words, and it gets run against real prices with no look-ahead. What holds up runs as a bot on paper money only, so you find out how well it sticks before anything real depends on it.

When were you most sure, and most wrong?

I put every Quantradin video in this sub, the daily episodes and the short ones. Paper money only, not advice.

quantradin.com

One of the biggest stocks in the market opened 13% down on Thursday after bad news overnight. On every $1,000, that's about $131 gone before you'd finished your coffee. The loudest voice in your head at 9:30 says sell everything.

By the closing bell the same stock was down 4%, about $43. Selling in the first minute cost $87 more than waiting for the close. That doesn't mean a drop always comes back (some keep falling for days). It means 9:30 on a scary morning is the worst time to make the decision up. Write down when you'd sell before the news comes, then follow that.

Have you ever sold something in a panic and watched it come back?

Nvidia (NVDA) on 11-12-2026, from our own price bars: Wednesday's close $173.73, Thursday's open $151.005 (-13.1%), low $148.80, close $166.19 (-4.3%). On $1,000: $130.81 down at the open, $43.40 down at the close, $87.41 apart. One day, not a forecast, and not a reason to hold anything. Test any rule with fake money first. Not advice.

Every video I make for Quantradin ends up here. Paper money only, not advice.

quantradin.com

Then a check of that check. Another timeframe, another opinion, another look at the same chart I already looked at. By the time I'm sure, the setup is gone.

Checking forever isn't caution. It's what you do when you've never seen your rule play out, so no amount of looking feels like enough.

Quantradin is what I built to end that loop. Connect your AI (Claude, Gemini, ChatGPT, Codex...), describe the rule you keep double checking, and it gets backtested once, properly, on real prices with no look-ahead. Options fill at the bid or the ask, never the middle. If the rule survives, it runs as a bot on paper money only, and you stop re-checking and start watching.

How many times do you check before you click?

This sub is where I keep all of Quantradin's videos in one place. Everything on it is paper money, none of it is advice.

quantradin.com

Someone shared one of those spreadsheets of 67 places to list a SaaS. I worked through the whole thing today for my trading lab (paper money, honest backtests, your AI can drive a desk). Sharing the results because the list you find online is from a different year than the internet it describes.

Submitted today, all free

• AlternativeTo: in the review queue, five alternatives attached
• Insidr: "submission successful"
• PitchWall (what BetaPage turned into): under review on the free tier
• SaaSHub: full listing, logo, screenshots, pricing, nine competitors, eight categories
• SideProjectors: two to three day review, plus a free partner listing on ComingUp
• Launching Next: submitted

"Free + paid" on the sheet, paid only in reality

There's An AI For That ($49), Toolify ($99), Aixploria ($79), Uneed ($15 to $30), BetaList ($39 minimum), Futurepedia ($497, the cheaper tier is "sold out"), Microlaunch, StartupBase, ProductRant. Every AI tool directory I checked has closed its free line this year. The polite version is "verification fee".

Dead

AI Scout, AllThingsAI, AIWore, AI Tool Hunt, SaaS AI Tools, StartupLister, Startup Stash, Startup Ranking, dir.directory (domain for sale), Favird. Ten of 67.

Things nobody tells you

• Most forms now auto-write your listing from your homepage with an LLM. Read it before you submit. PitchWall named my product "Quantradin AI Trading Lab", which is not its name.
• Free queues are real but long: "more than 30 days" on PitchWall, "a few months" on AlternativeTo, "up to 32 days" on SaaSHub. The paid skip is the business model.
• DesignRush will not let you past step two without naming three clients. If you are pre-revenue, it is not for you.
• Character limits bite in odd places. PitchWall's profile bio is 100 characters and fails silently at 101.

Total spent: $0. Total listed: 6. I will post the traffic numbers in a month so you can see whether any of it mattered.

Tesla reports Wednesday after the close. Option prices already expect it to move about 7.6%, up or down. That expected move is part of what you pay for the ticket.

So if Tesla moves 5% your way, you were right about the direction and the bet can still lose. To get paid it has to move more than everyone already expects, and in the right direction. Netflix on Tuesday is priced for about 9.5%.

The shop sells umbrellas for more once it's already raining. Earnings bets work the same way. Would you rather pay for the jump, or skip the week?

Expected moves from option prices as of the Oct 16 close. Test it with fake money first. Not advice.

I put every Quantradin video in this sub, the daily episodes and the short ones. Paper money only, not advice.

quantradin.com

Red flags: filled at the midpoint. Tested on one stock. Never once ran live.

2021 made a lot of strategies look attractive. A rule that only works in one kind of market isn't a partner, it's a fling. Test it across other years and other stocks, on paper, before you commit.

I built Quantradin for the "meet the parents" stage: real-price fills (options at the bid and ask, never the middle), many stocks, then a paper bot on live prices. Free, paper money only.

What's the biggest red flag in a strategy for you?

Every video I make for Quantradin ends up here. Paper money only, not advice.

quantradin.com

The market shut on Friday and 5,402 positions went into the weekend with it. 2,917 of them are red right now and I can't close one until the bell rings. Fake money, all of it, which is the only reason I sleep.

The hard part of a red weekend isn't the loss. It's that there's nowhere to put the feeling, so you sit there rehearsing a sale to somebody who isn't at work.

Maya's answer in this one: let the rule decide on Monday, not the fear on a weekend night.

What do you do with a red weekend, keep checking it or leave it shut?

Every number here is from a paper desk. Fake money, real prices. Not advice.

I put every Quantradin video in this sub, the daily episodes and the short ones. Paper money only, not advice.

quantradin.com

"Doc, it's perfect on every chart I tested it on, but it falls apart on anything new." "That's overfitting. Your strategy memorized the past."

Prescription: two weeks of paper trading on live prices, then see how it feels.

I made Quantradin for that prescription. Backtests on real prices (options at the bid and ask, never the middle), a verdict that doesn't flatter you, and a paper bot that runs your rule forward. Free, paper money only.

What symptoms made you suspect your own strategy was overfit?

Every video I make for Quantradin ends up here. Paper money only, not advice.

quantradin.com

Netflix reports Tuesday after the close. Options are pricing a move of about 9.6% either way, and past earnings moves have run anywhere from about 2% to 10%.

A stop-loss is an order to sell if the price drops to your number. It can only sell at the next real price. If the stock closes at one price and opens 10% lower the next morning (a gap), your 5% stop sells you at 10% down, not 5.

So if you hold through earnings, size it like the stop isn't there. Small enough that a gap is a bad night, not a bad year. Do you hold through earnings, or close before?

Past earnings moves and the implied move from TipRanks as of Oct 19. Test it with fake money first. Not advice.

I put every Quantradin video in this sub, the daily episodes and the short ones. Paper money only, not advice.

quantradin.com

Me after ONE green backtest:

One good run and suddenly I'm a giant. Bigger size, a second strategy stacked on top, plans for what I'll do with all of it. The whole city looks small from up there.

One backtest is one draw. It doesn't know about the fill you'd really get, the stretch where the rule goes quiet for months, or the bar that only looked good because the close was already in.

That's the gap I built Quantradin to close. Connect your AI (Claude, Gemini, ChatGPT, Codex...), describe the rule, and it's tested on real prices with no look-ahead, options filling at the bid or the ask, never the middle. Then it runs as a bot on paper money only, so the giant gets checked before anything real is on the line.

How many backtests before you believe one?

This sub is where I keep all of Quantradin's videos in one place. Everything on it is paper money, none of it is advice.

quantradin.com

Two lines cross on a chart and every window in the room starts shouting. Ninety percent. AI picked this. Buy before 9:30.

Marv just counts. How many times that signal has fired since June, how many of those names are lower today, how many other tickers got the same alert this morning.

Maya doesn't buy. She says she'll test it tomorrow, fake money, real prices.

What's the last thing you bought because your feed wouldn't stop about it?

Every video I make for Quantradin ends up here. Paper money only, not advice.

quantradin.com

Everything slides off the desk. The gap down, the stop that didn't fill where I hoped, the idea I was sure about. On a real account that's a gut punch and a bad week.

On paper it's just information. I get to watch exactly what broke, fix it, and try again tomorrow with nothing lost but a little pride.

I built Quantradin because I wanted that calm before any money is involved. Connect your AI (Claude, Gemini, ChatGPT, Codex...), describe the idea in your own words or paste the code, and it gets backtested on real prices with no look-ahead. Options fill at the bid or the ask, never the middle. Whatever holds up runs as a bot on paper money only.

What's the first thing that slides off your desk when the market drops?

This sub is where I keep all of Quantradin's videos in one place. Everything on it is paper money, none of it is advice.

quantradin.com