Erina.ai
Why Erina

The problem was never information.

Anyone who owns stocks today has more data than a professional had twenty years ago — free quotes, filings, options chains, and a model that will summarize any of it on request. Portfolios still drift, one stock still grows into a bet, losses still sit unharvested until December. What's missing isn't data. It's someone reading what you own every morning and saying, plainly, whether anything needs you.

About a minute to add your positions · 30-day trial, no card · nothing trades

Where the existing tools stop

Three things nothing else quite does.

01

A chatbot doesn't know what you own

It will tell you whether META looks expensive. It can't tell you that META is now 11% of your money and up 44.6% since you bought, or that a loss two rows down could lower this year's taxes, because it has never seen your positions.

Erina: your positions are loaded before you type a word. Every answer starts from what you own, how much, and what you paid.
02

Your brokerage isn't watching

It shows you a balance and a red or green number. It doesn't say why the number moved, that one stock has quietly become a fifth of everything, or that a holding reports Tuesday. It makes money when you trade, so it isn't built to tell you to wait.

Erina: reads your positions every morning and writes one line — "Nothing to decide. Two things worth knowing." — then the two things, each with a verb.
03

Nobody says "nothing needs you"

Alert feeds fire on everything, so you stop reading them. Screeners wait for a question you didn't know to ask. The decisions that hurt are the ones nobody flagged in time, buried under the ones that didn't matter.

Erina: most days the honest answer is no, and saying it clearly — with the number that proves it — is the product. When something does need you, it's one sentence.
Ask Erina

The same question, with your positions loaded.

"Is too much of my money in one stock?" A chatbot answers with a rule of thumb. Erina answers with your biggest position, its share of the total, the sector it sits in, and by how much you're over — then offers the next two questions. It says what it spent, and that it isn't advice.

  • Your book is the context. Not something you paste in.
  • The choices come with numbers. And "hold" is always one of them.
  • Says what it costs. A few credits, shown on the button, metered by what the answer actually used.
1,240 cr N
Ask Erina about your money
Ask anything. Your positions are already loaded.
Answers use your actual positions, not generic advice. Uses a few AI credits.
Is too much of my money in one stock?
Am I beating the market this year, and why?
What would a 10% market drop do to me?
Which of my stocks report earnings soon?
Is too much of my money in one stock?

Not one stock — but one sector, yes. JPM is your biggest position at 14% of your money, which is inside the 20% line most people keep. Technology is the thing to watch: seven of your twelve names sit there, 41% of the total.

A reasonable limit for someone with a twelve-name book is about 20% in any single stock and roughly a third in any sector. You're fine on the first, over on the second — by about $40k.

Show me the sector splitWhat would trimming look like?
Erina compares and drafts. Orders are placed at your broker. Not investment advice.
Ask Erina on the sample book. Not a recommendation and not investment advice.
Ten questions

That's the whole product.

Ranked by how often they come up and how much they move what people do. Each one has a screen that answers it, in the words you'd ask it in. Everything else — options flow, backtests, agents with thresholds — is one toggle away in the Advanced view, never the default.

See how each is answered →
  1. 01

    How am I doing?

    One honest number, today and this month against the S&P 500. Not a dashboard.

    Home · My money
  2. 02

    Do I need to do anything?

    Most days: no, and Erina says so in one line. When something needs you, it's a sentence with a verb.

    Home
  3. 03

    Why did my stock move?

    How much was the market, the sector, or the company itself — with the story that explains it.

    Home · Stocks
  4. 04

    What's coming up that touches my money?

    Earnings on what you hold, ex-dividend dates, a Fed day. Only your calendar, ten days out.

    Home
  5. 05

    Am I taking too much risk without knowing it?

    One stock too big. Cash sitting idle. Said plainly, before it grows into a problem.

    My money
  6. 06

    Should I buy, sell, or hold this?

    Erina answers with your book as context, and lays out the choices with the numbers attached.

    Ask Erina · Do something
  7. 07

    Can I keep more of what I make?

    Losses worth taking for tax, the wash-sale trap, and a same-sector swap so you stay invested.

    My money
  8. 08

    Can what I own earn a bit extra?

    Dividends and covered calls, framed as income on things you already hold.

    Do something
  9. 09

    Tell me about this stock in plain English.

    What the company does, is it expensive, what analysts think, when it reports, do you own it.

    Stocks
  10. 10

    Can I trust this?

    It never places trades. It says when it's a sample, when it's spending credits, and that it isn't advice.

    Everywhere
How it's built

Six things the Simple view keeps to.

Each one shows up in the app as something it does, or refuses to do — not as a value on a page.

  1. 01

    Plain words, always

    Money, not "book". Stocks, not "markets". "Is one stock too big?", not "concentration". If a sentence needs a glossary it gets rewritten, not footnoted. Every number is rounded and there are few of them: one big number per card.

  2. 02

    One question per screen

    Home answers how you're doing, whether anything needs you, why a stock moved and what's coming up. My money answers the risk and tax questions. Stocks answers one company at a time. Do something answers buy, sell, hold. Nothing answers everything at once.

  3. 03

    Reassurance is a feature

    When nothing needs you, Erina says "Nothing to decide" and shows the line that proves it — ahead of the market this month, or behind, and by how much. An empty list is an answer, not an empty box.

  4. 04

    Every card has an exit to depth

    "Full risk view", "Full details", "Look closer" — each lands on the Advanced page for the same thing, in the same tab, with the toggle still on top. Simple is the default, never a ceiling.

  5. 05

    No AI on the Simple pages

    Every number on Home, My money and Stocks is arithmetic on your positions, so it never touches credits. Erina spends credits only when you ask her a question or press something marked "uses AI", and every call is listed with what it used.

  6. 06

    It never trades

    Erina isn't connected to your broker and has no way to place an order. Every verb opens something inside Erina — compare, draft, see. That's a design decision, not a missing feature, and it's the reason it can lay out "hold" as a real choice.

What that adds up to

A health check that only speaks when there's something to say.

My money on the sample book. Each row appears only when it's true of your positions — one stock too big, winners worth protecting, losses that could lower your taxes, earnings inside two weeks. Every number is arithmetic, and every row has a verb.

1,240 cr N
My money
What you own
Total
$538,442
+0.7% today
Since you bought
+$61,200
unrealized
Cash
$25.0k
4.6% not invested
Holdings
12
stocks + funds
Health checkFull risk view →
JPM is 14% of this accountGetting large. Worth knowing before it grows further. Look closer
11 stocks are up 20% or more since you boughtMETA, NVDA, AVGO and more. Nice problem: take some off, protect the gain, or let it run? Compare
$7.3k of losses could lower your taxesMostly UNH. Selling a loser and buying something similar keeps you invested and books the loss against gains. See how
1 of your stocks reports earnings in the next two weeksMSFT is first, in 3 days. Earnings days are when stocks move most. Prepare
Stocks and funds · biggest first · value, then gain since you bought
JPM180 sh 14% of your money $75,400+$9,100 · +13.7%
META80 sh 11% of your money $59,300+$18,300 · +44.6%
MSFT110 sh 10% of your money $54,100+$8,900 · +19.7%
UNH60 sh 5% of your money $24,700−$7,300 · −22.8%
Illustrative output on sample data. Not a recommendation and not investment advice.
Fit

Who this is actually for.

A good fit if…

  • You own stocks and manage them yourself, and intend to keep doing it.
  • You'd rather be told "nothing needs you" than check five apps every morning.
  • You want to know why a stock moved before you decide whether to do anything.
  • You'd rather see three choices with the numbers attached than one verdict.
  • You want the full desk to exist — agents, options, backtests — without living in it.

Not a fit if…

  • You want someone to manage the money for you — Erina isn't an adviser and doesn't take discretion.
  • You want automated execution or a trading bot. There's no order path at all.
  • You're looking for signals to follow without reading the reasoning.
  • You trade instruments outside US-listed stocks, ETFs and equity options.
Start your trial

Show Erina what you own. See what she says tomorrow morning.

About a minute, no card, no broker login. The first read lands in seconds, and the account is yours for 30 days before you pick a plan.

No credit card · 30-day trial of the Solo surfaces · about a minute to add your positions · never trades