If you have accounts at multiple brokers (Fidelity, Schwab, Interactive Brokers, Coinbase, etc.), consolidating them in one Excel tracker gives you unified visibility. Instead of logging into three accounts to check your overall performance, you see everything in one place.
This guide walks through building a multi-broker investment tracker that consolidates holdings and calculates your total portfolio performance.
The Challenge: Multiple Brokers, One Portfolio
Most investors have accounts spread across different platforms:
- Fidelity for stocks and mutual funds
- Schwab or Interactive Brokers for options trading
- Coinbase or Kraken for crypto
- Betterment or M1 Finance for automated investing
Without consolidation, you:
- Have to log into 3+ accounts to see your total balance
- Can't calculate true asset allocation across all accounts
- Miss concentration risks (that stock might be in two accounts!)
- Struggle with tax reporting and rebalancing
Building Your Multi-Broker Investment Tracker
Step 1: Create Separate Sheets for Each Broker
Start with one Excel file with multiple sheets:
- Sheet 1: Fidelity Holdings (columns: Ticker, Shares, Entry Price, Current Price, etc.)
- Sheet 2: Schwab Holdings (same column structure)
- Sheet 3: Crypto Holdings (Ticker, Amount, Entry Price, Current Price)
- Sheet 4: Consolidated Summary (pulls totals from all sheets)
Keeping each broker separate makes updating easier and helps track which account is which.
Step 2: Use Consistent Column Structure
Every broker sheet should have the same columns so your consolidation formulas work:
The "Broker" column (Fidelity, Schwab, Crypto) helps you identify which account each holding is in when troubleshooting.
Step 3: Build the Consolidated Summary Sheet
This sheet pulls data from all broker sheets and calculates totals:
Now you have one number for your entire portfolio performance, across all brokers.
Step 4: Calculate Allocation by Broker
See how much of your portfolio is at each broker:
This shows if you're over-concentrated at one broker (which affects liquidity and risk).
Step 5: Identify Duplicate Holdings
You might own Apple stock at both Fidelity and Schwab without realizing it. Use a pivot table or manual review to spot this:
- List all unique tickers across all sheets
- Sum their total values
- Check if any exceed your intended allocation
⚠️ Important: Finding duplicates can reveal concentration risk. If AAPL is 8% at Fidelity and 7% at Schwab, you're actually 15% concentrated in Apple—much riskier than intended.
Adding Account-Level Performance Tracking
Individual Account Returns
Calculate return % for each account separately to see which is performing best:
Account Fee Tracking
Different brokers charge different fees. Add a "Fees" column to each sheet:
Know exactly how much you're paying across all brokers.
Data Update Strategy for Multi-Broker Tracking
Keeping data fresh across multiple accounts is harder than a single-broker tracker. Here's a sustainable approach:
Weekly Update (30 minutes total):
- Log into Fidelity, export holdings as CSV
- Paste current prices into your Fidelity sheet
- Repeat for Schwab, Coinbase
- Consolidated summary auto-updates
Monthly Deep Review (1 hour):
- Check for new holdings or sales (not yet in your tracker)
- Verify no duplicate positions
- Review allocation drift (are you still 60/40?)
- Note any large gains or losses in your tracker notes
Advanced Multi-Broker Features
Account Linking Summary
Create a reference sheet showing which account is for what purpose:
Tax Lot Tracking
For proper tax reporting, track cost basis by lot (date purchased). Some brokers support this, but you can also track manually:
This matters for wash sales and long-term vs. short-term capital gains.
When Multi-Broker Excel Tracking Breaks Down
Your multi-broker Excel tracker works until:
- You have > 50 holdings across 4+ brokers (updating becomes 2+ hours/month)
- You need real-time consolidation (Excel is stale data)
- Tax reporting requires detailed lot tracking
- You want correlation analysis between accounts
- You need mobile access to all accounts in one place
At this point, a dedicated multi-broker tracker automates the consolidation and gives you real-time insights. Evaluate your options in our Excel vs automated tools comparison.
Next Steps
- Create one Excel file with sheets for each broker
- Enter your current holdings from each account
- Build the consolidated summary sheet
- Set a weekly update routine (every Friday)
- Review quarterly for rebalancing opportunities
Related Portfolio Tracking Guides
Build on your multi-broker tracker: