Coinbase Sync Ticker Causing Massive Valuation Errors in Investment Performance (edited)

Travis H
Travis H Member ✭✭
edited December 2025 in Adding and Updating Accounts

Summary:The Coinbase API integration is naively matching Cryptocurrency symbols to Stock/ETF tickers without checking the asset class. This results in "Ticker Collisions" that destroy portfolio accuracy, creating phantom wealth in some places and massively devaluing assets in others.

Steps to Reproduce:

  1. Link a valid Coinbase account containing Bitcoin (BTC), Ethereum (ETH), and a Cash/USDC balance.
  2. Allow Simplifi to sync holdings.
  3. Review the "Portfolio" tab.

Observed Behavior (The Errors):The system prioritizes Stock Market tickers over Crypto tickers for the synced symbols:

  • CRITICAL ERROR 1 (Cash becomes Leverage): The holding for "USD" (Cash/Stablecoin) is being mapped to ProShares Ultra Semiconductors (Ticker: USD).
    • Result: A cash balance of $100 is treated as 100 shares of the ETF, artificially inflating Net Worth by thousands of dollars.
  • CRITICAL ERROR 2 (Crypto Devaluation): The holding for "BTC" (Bitcoin) is being mapped to Grayscale Bitcoin Trust (Ticker: BTC).
    • Result: Actual Bitcoin (worth ~$95k+) is valued at the Grayscale Trust share price (~$40), artificially destroying ~99% of the asset's value in the portfolio view.
  • CRITICAL ERROR 3 (Wrong Security): "ETH" is mapped to the Grayscale Ethereum Trust rather than the underlying crypto asset.

Expected Behavior:Holdings imported from a Coinbase (Crypto) connection should map to their respective Cryptocurrency pairs (e.g., BTC-USD, ETH-USD) or Cash, never to US Stock Exchange tickers.

Impact:My Net Worth calculation is useless. I cannot manually edit the tickers because they are locked by the API sync. The only workaround is to delete the account entirely.

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