Longsight

Your partner in long-term financial growth!

Longsight is a Google Sheets Add-on built for long-term investment analysis. Use our Add-on to generate a template, enter the stocks you want to track, and get insights to support your strategy over time.

Free Install

Win the market with Longsight

“The stock market is a device for transferring money from the impatient to the patient.”
— Warren Buffett

“The big money is not in the buying or selling, but in the waiting.”
— Charlie Munger

“In the short run, the market is a voting machine, but in the long run, it is a weighing machine.”
— Benjamin Graham

Long-term investing starts with long-term analysis

Easily analyze stocks for the long run—right inside your Google Sheets.
Longsight helps you compare performance, spot undervalued opportunities, and rebalance smarter with just a few clicks.

Compare long-term stock performance with a single click

Identify undervalued stocks by comparing financial ratios

Rebalance portfolio by analyzing stock correlations

Manage Subscription

Unlock powerful investing—right inside your Google Sheets

Subscribe now to access simplified tools, real equity data, and long-term clarity.
🎉 Sign in with Google and start now for a 7-day free trial
✨ Save 18.91% with an annual subscription!

Continue with Google

Join. Install. Start.

No complicated setup. Just sign in, install the add-on, and you’re ready to dive into analysis.

01 Create an Account

Join us by signing in with the Google account you use for Google Sheets

02 Install Google Sheets Add-on

Install our add-on from Google Workspace Marketplace

03 Start Analysis

Start analyzing with our templates in Google Sheets

Key Features

We help you analyze, compare, and act—right from Google Sheets—with full access to US and Japan-listed equities and ETFs.

Do it all in your own Google Sheets

No more locked-in dashboards. Analyze and compare right where you’re comfortable.

Focused on long-term investing

Cut the noise. We only show the metrics that help you stay invested for the long run.

US & JP equity + ETF data

Access comprehensive listings and data for US and Japan listed equities and ETFs.

Learn once, use everywhere

All templates follow the same logic—once you get the hang of it, everything just clicks.

Continuous updates

We keep adding features that actually help long-term investors.

Cheaper than a cheeseburger a month

Affordable pricing, serious investing insights.

From Click to Insight—See How It Works

A quick demo to show just how simple long-term investing analysis can be.

Try our 7-day free trial today

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The Backbone of seamless operations

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250+

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90%

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1.5M+

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20+

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Trusted by companies all over the world

Accessible through all devices

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