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The reason
you hold it,
kept honest.

Write the reason you bought each position. We read the earnings, filings and news against it. When it starts to break, we tell you that day.

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NVDANVIDIA
HIGH SIGNAL
AUG 28 · EVIDENCE
Blackwell shipments slipping into Q4. Gross margin came in at 74.6%, below the 76.4% everyone expected. Google and Amazon both stepping up their own chip programs.
YOUR EXIT CONDITION · WRITTEN JAN 9
“If the cloud companies stop spending on AI chips, or Nvidia loses the developer ecosystem, I'm out.”
Still believe →Story changed →
The problem

You bought it for a reason.
Can you still remember it?

You had a reason when you bought. “AI is the next decade.” “The market has completely mispriced this.” Later, events happen but you are not sure if they are relevant to your reason.

So you check the price instead. Green feels like being right. Red feels like being wrong. Neither one tells you whether the reason you bought still holds. penKeep checks that for you, and tells you when it doesn't.

Try it

Write any reason.
See what comes back.

Try with →auto-cycling
Your thesis · NVDAlive demo
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We extracted →
Healthy · 84
AI infraFounder bet
We'll watch →
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·NVDA data-center revenue
·Jensen earnings-call tone
How it works

Three steps. That is the whole thing.

01
Write the reason
A sentence or two. Why you own it and what would make you sell. That becomes your exit condition.
02
We stand watch
penKeep reads the earnings, filings, analyst notes and news, then ignores everything that does not touch the reason you wrote.
03
You decide
When something real tests your reason, we put your own words back in front of you. You make the call. We keep a record of it.
When it matters

Your own words,
right when evidence fires.

Not a price alert. Not noise. The exit condition you wrote, put back in front of you the moment something starts to test it. Think it through. Don't react.

Evidence
Your reason
You decide
On record
Evidence fires
Your condition
You decide
Logged forever
TSLATesla
live
high signal · penKeep detected

Q3 deliveries -8.4% YoY. Robotaxi event called 'underwhelming' by 7 of 9 analysts.

click to pause · auto-cycling

A real story

One thesis.
Eight months.

One TSLA thesis, followed from entry to the first real test. Here is how the evidence moved, and the moment penKeep would have put the written exit condition back in front of the investor.

T
TSLA · Tesla
Bought Mar 2024 · Mar 12, 2024
✓ on thesis
What you wrote · Mar 12
“EV growth + robotaxi optionality nobody is pricing.”
Mar 12 · Bought TSLA
EV growth + robotaxi optionality nobody is pricing.

Re-created from public coverage of TSLA, Mar–Oct 2024. Not financial advice.

What we don't do

Built around your reason.

Price alerts
A price can fall for a hundred reasons that have nothing to do with why you bought. We wait for the real evidence. An earnings line, a filing, a lost customer. That is what reaches you.
A social feed
There’s no one else in here. The only portfolio we pay attention to is the one you actually own.
Buy / sell signals
Every decision stays yours. When something tests your reason, we set your own words beside it and let you make the call.
Daily engagement
Most days you won’t hear from us. We stay quiet until something touches a reason you wrote, then say so plainly. Once a week, a short digest.
The part you didn't write down
The thing that sinks a stock is usually the one you'd have felt silly writing down.
You note what you believe, and we keep an eye on it. We also read for the rest. A big customer quietly building their own version. A rule change three countries away. A shift everyone calls obvious in hindsight. When one turns up, you hear about it early, while there's still something you can do.
No reason yet?
Bought on a hunch? Start anyway.
Maybe a friend keeps bringing it up. Maybe it was all over your feed and you didn't want to be the one who missed it. Tell us the ticker. We'll build the case against it, the ways it could go wrong that never come up in the group chat, and a short list of things worth watching. Then we keep an eye on those signals for you, so the hunch turns into a reason you can actually defend.
What you're really building
Every reason you write is a record of how you think.
Give it a year and you have an honest record of your own judgment: what you believed, what actually happened, and whether you got it right.
Every call you make gets read back when the bet is actually tested. Reaffirm, trim or walk away, and a quarter or two later we tell you how it played out: held, exited, dismissed. The patterns surface on their own. Where your conviction tends to hold, and where you wave off the warnings that turn out to matter.
Questions

Is this financial advice?

No. penKeep never tells you to buy, hold or sell. It shows you what is happening to the reasons you wrote down, and every decision stays yours.

Do you connect to my brokerage?

You can connect it read-only to track positions, or just add your holdings by hand. We never place trades and never touch your money.

What does “watching” actually mean?

For each reason you write, we keep an eye on the things that could prove it wrong: earnings, filings, competitor moves. Everything else, we leave alone.

Will I get spammed with alerts?

No. Most weeks you will hear from us once, in the Sunday digest. We only send a real-time alert when something directly tests one of your exit conditions.

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real reason.

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