OxyNeo · Portfolio Rebalancer

Turn your current portfolio into a clear target allocation

Free · No account needed to try · No brokerage connection required

See it in action

Same stocks, smarter weights

A sample run of the actual rebalancer — enter the stocks you own, pick a goal, and get whole-share targets in seconds.
Portfolio Rebalancer
Sample run

Your holdings

  • AAPL12 shares
  • MSFT8 shares
  • GOOGL6 shares

Goal

Lower volatilitySteadier value
Higher expected return

Your target allocation appears here.

Illustrative sample run. Figures are estimated from historical data, not a prediction.

HOW IT WORKS

From your holdings to a rebalance plan

See exactly what you enter, what OxyNeo calculates, and what you get back.

Step 01

Add your current holdings

Search for the stocks you own and enter how many shares you hold.

Step 02

Choose your goal

Prioritize lower volatility or higher expected return, and pick 1, 3, or 5 years of historical data.

Step 03

Review your rebalance plan

Compare current vs target allocation and see the exact share trades to get there.

What you actually receive

A plan you can act on

Beyond the target allocation you just saw, every run hands you the exact whole-share trades, a benchmark, and a file ready for your broker.
Whole-share trades
The exact buys and sells, in whole shares, to reach the target — no fractions.
AAPLSell 3
MSFTBuy 2
GOOGLBuy 1
Benchmarking
How the current and target allocations would have tracked the S&P 500 or MSCI World.
An exportable plan
Download the trade list as CSV or print it — ready to take to any broker.

Illustrative example. Whole shares only — no fractions, and fees and taxes aren't included. Every figure is estimated from historical data, not a prediction, and lower volatility isn't the same as safe.

The science

The science behind OxyNeo

OxyNeo is built on modern portfolio theory — the framework from Nobel laureate Harry Markowitz. Here is what it does, step by step.

A portfolio should not be judged only by how each investment does on its own — what also matters is how the investments move together. Two volatile stocks can still lower a portfolio's risk if they tend to rise and fall at different times. OxyNeo measures this through correlation and covariance.

Estimated volatility Estimated return CurrentTarget
Possible allocation Efficient frontier

Each point is a possible allocation. Portfolios on the efficient frontier offer a better estimated balance between return and volatility.

Get started with secure sign-in

Continue with Google or GitHub to save portfolios and track performance.

OxyNeo provides portfolio analysis for educational and informational purposes only and is not financial, investment, or tax advice. All investing involves risk, including the possible loss of principal; past performance does not guarantee future results. Market data may be delayed or inaccurate. Consult a licensed financial professional before making investment decisions.

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Release 1.11.0