Build and optimize your portfolio like a Pro.
For investors who choose their own stocks and ETFs. Structure allocations, set constraints and optimize your portfolio with vollat.
Advanced portfolio controls
Your existing learning, portfolio tools and Free access remain available.
Your holdings
Your stocks. Your ETFs. Your starting point.
Constraints
Set the boundaries before the calculation, from position size to sector exposure.
Current vs. optimized
Inspect the changes in weights, risk and turnover, then save your target.
One rule. A different balance.
See how a constraint can change the allocation. Choose a rule and watch the example portfolio respond.
Allocation impact
No position above 30%. The largest holding is reduced and the weight moves to other assets.
Lower concentration can mean more turnover. A lower risk target can also reduce estimated return.
Illustrative scenarios, not live calculations or a forecast. Constraints can lower estimated return and require more trades.
A good backtest is only the beginning.
Out-of-sample (OOS) checks an allocation on later historical data that were not used to choose its weights.
This helps reveal allocations that only looked strong in their fitting period. It supports a more robust assessment; historical validation does not guarantee future returns.
- 01
Calculate with what was known.
Choose the allocation using only information available at that point.
- 02
Keep the decision fixed.
Evaluate those weights in the next historical period, without using its prices in advance.
- 03
Move forward. Test again.
Repeat across successive windows to see how the method behaves beyond the data used to fit it.
Illustrative walk-forward example · not portfolio results
More control over every allocation.
For investors who choose their own stocks and ETFs. Structure allocations, set constraints and optimize your portfolio with vollat.
Constraints
Min Weight · Max Weight · Asset count · Volatility target · Sector cap · Country cap · Must include · Exclude · Objective priorities
Risk
Volatility · Sharpe · Drawdown · Turnover
€6.90 total per month. Renews monthly until cancelled; cancel at any time for the end of the paid period.
Advanced portfolio controls
- Allocation
- Risk
- Constraints
- Optimization
- History
Current early-access limits: 5 portfolios and 25 engine runs per account. Internal Rebalance and Add Money do not consume runs.
