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2004issue C051-2

Capping futures leverage to intended share exposure

Freeze the cash-market share count first, then post the smaller single-stock futures deposit for that count only. Leftover cash is unused buying power, not a reason to add contracts.

  • A single-stock futures contract was an agreement to buy or sell 100 shares, so the planned cash share count is the cap on share-equivalent exposure.
  • Cash shares required 100 percent cash or a 50 percent broker loan, while futures initial margin was 20 percent of contract value.
  • Sized to the same share count, futures produced the same dollar gain or loss as the cash shares; leftover cash after the deposit is unused buying power, not more contracts.
  • Choose a listing only when the underlying, the horizon, and physical delivery can stand in for the planned cash-share position.
Entries in this reading3 entries
Current trackMargin management68 readingsLeverage control70 readingsFutures contract selection91 readings

Freeze the share count first

The archive treated a single-stock futures contract as an agreement to buy or sell 100 shares of one stock on a later date. The size question was how many cash-market shares that book was meant to copy, not how much cash happened to sit in the account after the smaller deposit was posted.

Share-equivalent exposure is that planned cash share count. In this workflow it is the risk cap. The size of the futures deposit is not.

Cash payment and the futures deposit

Cash-market stock purchases were described as requiring 100 percent cash or a 50 percent broker loan. Single-stock futures initial margin was stated as 20 percent of contract value.

Initial margin is the fraction of contract notional posted to open and keep the futures position. Margin management here means sizing that deposit from price, the 100-share multiplier, and the contract count before entry, then keeping unused cash out of additional exposure.

Two archive examples

At a $42 share price, 100 shares were valued at $4,200. The 20 percent futures deposit on that one-contract book was $840, also obtained by multiplying the share price by 20.

A $30 stock example compared 800 cash shares costing $24,000 with eight futures contracts requiring a $4,800 deposit. That left $19,200 outside the futures margin. The archive did not treat that leftover cash as a second share budget.

Matching shares matches the dollar swing

A futures position sized to the same share count was described as producing the same dollar gain or loss as the cash shares. Adding contracts beyond that count would enlarge both outcomes.

Leverage control is the act of keeping intended share-equivalent risk fixed so the lower futures deposit does not silently become a larger position.

Carry, listings, and delivery

Futures fair value was said to incorporate financing carry and expected dividends, while remaining close enough to the cash price for practical margin estimates. Cost of carry is that financing and expected-dividend adjustment. It was not treated as a reason to abandon the cash quote when estimating the deposit.

The listed single-stock futures universe was limited to about 100 names, mostly large-capitalization stocks, with contracts available as far as 15 months ahead and physical delivery at expiration. Futures contract selection means choosing a listing only when the underlying, the listing horizon, and expiration handling can stand in for a planned cash-share position. Physical delivery can convert the futures book into actual shares unless the contract is closed first.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
4 of 25 in the Margin management track
20051-2 pp.Next on Margin managementCurrency execution costs hide in spreads and marginCurrency trades are presented as carrying no separate commission because the cost is built into the bid-ask spread.
All readings on this track · 25 readings
  1. 1988When action-seeking replaces the decision process
  2. 1997Convert a market story into a testable decision process
  3. 2004Posted margin as the scarce input of an option-income write
  4. 2004Capping futures leverage to intended share exposure
  5. 2005Currency execution costs hide in spreads and margin
  6. 2006Daily margin as a leverage filter
  7. 2006A commodity sleeve is a contract-design choice
  8. 2007Bounding futures risk with stops, trails, and margin
  9. 2010Currency futures versus forex on spread, margin, and micros
  10. 2010Enforced margin as the real futures trade guarantee
  11. 2010Choose mini or standard futures before the first fill
  12. 2012Segregated margin is an incomplete exposure filter
  13. 2013Posted tickets hide margin and fill gates
  14. 2013Portfolio margin calls versus pair-hedge leverage locks
  15. 2015Forex execution checks for fills, margin, and leverage
  16. 2015Cheaper margin is not a currency leverage edge
  17. 2015Cheap daytrading margin is not a risk discount
  18. 2016Futures liquidity filter with equal-dollar size and effective margin
  19. 2016Cap futures leverage before margin turns into debt
  20. 2016Gold option income as a margin-sizing problem
  21. 2017Electronic matching changed what a futures account could carry
  22. 2018Broker margin-upcharges can force an option-income exit
  23. 2019Inspect execution cost and margin bounds before cycle timing
  24. 2020Treat automatic futures gearing as a pre-entry filter
  25. 2020Equal-dollar futures liquidity and an effective margin screen
By fieldSizing and leverage109 readingsBy year2004180 readings
All 68 readings tagged Margin management
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