Corporate actions
How to handle mergers, spinoffs, symbol changes, bonus issues, and delistings in your portfolio.
Corporate actions are events initiated by a company that affect its stock. TrackMyShares handles these automatically, preserving your cost basis and holding periods for accurate tax reporting.
Supported corporate actions
| Action | What happens | Tax impact |
|---|---|---|
| Bonus issue | Extra shares issued to existing holders | No tax event. Cost basis spreads across more shares. |
| Delisting | Stock removed from exchange | Capital loss equal to remaining cost basis. |
| Symbol change | Ticker renamed (e.g., FB to META) | No tax event. All history moves to new symbol. |
| Merger | Company acquired for stock, cash, or both | Cash component may trigger gains. Stock portion defers gains. |
| Spinoff | Company distributes subsidiary shares | No tax event. Cost basis splits between parent and spinoff. |
Bonus issues
A bonus issue (also called a scrip issue or bonus shares) gives existing shareholders additional shares at no cost. It works like a stock split: your share count increases but total cost basis stays the same.
Recording a bonus issue
- Click Actions then Add transaction
- Select Bonus issue
- Enter the ratio. For example, a 1-for-2 bonus (1 new share for every 2 held) uses ratio 3:2
- Enter the effective date
- Click Add transaction
Example
You hold 100 shares of XYZ at $50 each ($5,000 total cost basis). The company issues a 1-for-1 bonus:
- Ratio: 2:1
- Before: 100 shares at $50 average cost
- After: 200 shares at $25 average cost
- Total cost basis: $5,000 (unchanged)
Delistings
When a stock is delisted or becomes worthless, you can record this to realize a capital loss for tax purposes.
Recording a delisting
- Click Actions then Add transaction
- Select Delisting
- Enter the symbol and the delisting date
- Set the quantity to your current holding and price to 0
- Click Add transaction
The system will:
- Realize a capital loss equal to your remaining cost basis
- Classify the loss as short-term or long-term based on each lot's holding period
- Mark the holding as delisted
Example
You hold 500 shares of ABC with a cost basis of $10,000. The company is delisted:
- Capital loss realized: $10,000
- If you held 200 shares for over a year and 300 for under a year, you get $4,000 long-term loss and $6,000 short-term loss
Symbol changes
When a company changes its ticker symbol, all your transaction history needs to move to the new symbol. TrackMyShares handles this seamlessly.
How it works
A symbol change:
- Moves all existing transactions to the new symbol
- Preserves all cost basis lots and purchase dates
- Removes the old holding
- Creates no tax event
Processing a symbol change
Symbol changes are processed through the corporate action API or MCP tools. Contact support if you need to process one manually, or use the MCP tool:
process_corporate_action(
action: "SYMBOL_CHANGE",
holdingId: "your-holding-id",
targetSymbol: "NEW_TICKER",
targetMarket: "US",
date: "2025-01-15T00:00:00.000Z"
)
Mergers and acquisitions
When a company is acquired, shareholders typically receive some combination of cash and shares in the acquiring company.
Types of mergers
Pure stock merger (no cash): Your shares convert to the acquiring company's shares. No gains are realized. Cost basis transfers entirely to the new shares.
Pure cash acquisition: The acquirer pays cash for all shares. This is treated like a sale: you realize capital gains or losses.
Cash and stock merger: You receive both cash and shares in the new company. The cash component reduces the cost basis transferred to the new shares.
How it works
When you process a merger:
- Your old holding's lots are examined
- For stock mergers, new lots are created on the target holding with:
- Quantity adjusted by the conversion ratio
- Cost basis transferred (minus any cash received)
- Original purchase dates preserved (for holding period tracking)
- The old holding reflects the merger transaction
Example
You hold 100 shares of TargetCo at $50 each ($5,000 cost basis). AcquirerCo offers 0.5 shares + $10 cash per TargetCo share:
- Cash received: 100 x $10 = $1,000
- New shares: 100 x 0.5 = 50 shares of AcquirerCo
- Cost basis transferred: $5,000 - $1,000 = $4,000
- Cost per AcquirerCo share: $4,000 / 50 = $80
Your 50 AcquirerCo shares retain the original purchase dates from your TargetCo lots.
Spinoffs
In a spinoff, a parent company distributes shares of a subsidiary to existing shareholders. Cost basis is split between the parent and the new company based on an allocation percentage announced by the company.
How it works
When you process a spinoff:
- The parent holding's cost basis is reduced by the allocation percentage
- A new holding is created for the spinoff company with:
- Quantity based on the conversion ratio
- Cost basis from the allocation percentage
- Original purchase dates preserved
- The parent's share count stays the same
Key information you need
Before recording a spinoff, you need two pieces of information from the company's announcement:
- Conversion ratio — How many spinoff shares per parent share (e.g., 0.25 means 1 spinoff share for every 4 parent shares)
- Cost basis allocation — What percentage of the original cost basis goes to the spinoff (e.g., 15% means 15% of cost basis moves to the spinoff, 85% stays with the parent)
Tip: The cost basis allocation percentage is usually published in the company's press release or IRS Form 8937. Search for "[company name] spinoff cost basis allocation" to find it.
Example
You hold 200 shares of ParentCo at $100 each ($20,000 cost basis). ParentCo spins off SubCo at 0.25:1 with 20% cost basis allocation:
Parent (ParentCo):
- Shares: 200 (unchanged)
- Cost basis: $20,000 x 80% = $16,000
- New average cost: $80 per share
Spinoff (SubCo):
- Shares: 200 x 0.25 = 50
- Cost basis: $20,000 x 20% = $4,000
- Average cost: $80 per share
Total cost basis: $16,000 + $4,000 = $20,000 (unchanged)
CSV import support
All corporate action types can be imported via CSV. Use these values in the type column:
| Action | CSV values |
|---|---|
| Bonus issue | BONUS_ISSUE, BONUS, BONUS ISSUE, BONUS SHARES |
| Delisting | DELISTING, DELISTED, WORTHLESS |
| Symbol change | SYMBOL_CHANGE, RENAME, TICKER_CHANGE |
| Merger | MERGER, ACQUISITION, TAKEOVER |
| Spinoff | SPINOFF, SPIN-OFF, DEMERGER |
Tax reporting
Corporate actions are reflected automatically in your tax report:
- Bonus issues and spinoffs do not generate taxable events
- Delistings appear as capital losses, classified by holding period
- Cash merger components appear as capital gains
- Symbol changes have no tax impact
All holding periods are preserved across corporate actions, so your short-term and long-term classifications remain accurate.