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Why doesn't a bitcoin fund dollar equal real coins, and what fees cause it?

Research question: Why would a dollar invested in a bitcoin fund not equal a dollar's worth of coins actually held, and what fees or price gaps separate the two?

A dollar invested in a Bitcoin fund does not equal a dollar's worth of coins because the trust pays sponsor fees and other expenses by transferring or selling Bitcoin, which steadily reduces the number of coins backing each share 18. Additional costs such as Bitcoin network fees and brokerage commissions are borne by the trust, further diminishing the Bitcoin held per share 11. Price gaps arise because the fund's Net Asset Value is based on a specific index or snapshot price, while the actual market price of shares can trade at a premium or discount to that NAV due to arbitrage limitations 37. Furthermore, delays in executing trades through counterparties can push the actual execution price materially away from the index price used to set the NAV 5.

Checked 2026-10-16. Only documented and supported facts are used.
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Sources

[1] documented
Each Share's Bitcoin backing shrinks over time because the Trust pays the Sponsor's fee and other expenses by transferring or selling Bitcoin, so a Share represents fewer Bitcoin afterward.
"The number of Bitcoin represented by a Share will decline each time the Trust pays the Sponsors Fee or any Additional Trust Expenses by transferring or selling Bitcoin."
424B3 Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-01-11
[2] documented
The trust charges a unitary sponsor fee of 0.20% per year on its bitcoin holdings, which steadily reduces the value per share relative to the bitcoin held.
"The Trust pays an unitary Sponsor Fee of 0.20% per annum of the Trust’s bitcoin holdings."
10-Q Bitwise Bitcoin ETF (BITB) (CIK 0001763415) 2025-05-12
[3] supported
The trust values its bitcoin using an exchange-traded price from its principal market as of 11:59 p.m. Eastern Time on the financial statement measurement date, so the reported value is a single snapshot price, not the price at which the coins could be sold.
"utilize an exchange-traded price from the Trust’s principal market for bitcoin as of 11:59 p.m. Eastern Time (“ET”) on the Trust’s financial statement measurement date."
10-Q iShares Bitcoin Trust ETF (IBIT) (CIK 0001980994) 2024-11-07
[4] documented
The Sponsor is paid its fee in Bitcoin, withdrawn from the Trust's vault, and the number of Bitcoin taken depends on the accrued but unpaid fee.
"the Sponsor will instruct the Custodian to withdraw from the Trusts Vault Balance (as defined below) the number of Bitcoin equal to the accrued but unpaid Sponsors Fee"
424B3 Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-01-11
[5] documented
Delays in executing bitcoin trades through trading counterparties could push the actual execution price materially away from the index price the trust uses to set its NAV.
"Such delays could cause the execution price associated with such trades to materially deviate from the Index price used to determine the NAV."
10-Q iShares Bitcoin Trust ETF (IBIT) (CIK 0001980994) 2024-11-07
[6] documented
When the Sponsor converts the fee Bitcoin to U.S. dollars, the conversion rate may differ from the rate used to set the fee, which can change the dollar value received.
"The rate at which the Sponsor converts such Bitcoin to U.S. dollars may differ from the rate at which the relevant Sponsors Fee was determined."
424B3 Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-01-11
[7] supported
Share prices can drift from NAV: if the arbitrage mechanism fails, shares may trade at a premium or discount to NAV, so investors may pay more than, or sell for less than, the value of the bitcoin behind each share.
"If the arbitrage mechanism is not effective, purchases or sales of Shares on the secondary market could occur at a premium or discount to NAV, which could harm Shareholders by causing them buy Shares at a price higher than the value of the underlying bitcoin held by the Trust or sell Shares at a price lower than the value of the underlying bitcoin held by the Trust, causing Shareholders to suffer "
10-Q iShares Bitcoin Trust ETF (IBIT) (CIK 0001980994) 2024-11-07
[8] documented
The sponsor's fee is actually paid by moving bitcoin out of the trust each month, so the trust's bitcoin balance falls by the fee amount converted at the BRRNY price.
"On or about the last day of each month, an amount of bitcoin will be transferred from the Trust Bitcoin Account to the Sponsor Bitcoin Account equal to the sum of all daily Sponsor Fees accrued for the month in U.S. dollars divided by the BRRNY on the last day of the month."
10-Q Bitwise Bitcoin ETF (BITB) (CIK 0001763415) 2025-05-12
[9] documented
From July 1 to September 30, 2023, Shares traded on OTCQX at an average discount of 24% below NAV per Share, with a maximum discount of 30%.
"from July 1, 2023 to September 30, 2023, the average discount of the closing price of the Shares quoted on OTCQX below the value of the Trusts NAV per Share was 24%, with a maximum discount of 30%."
424B3 Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-01-11
[10] documented
The sponsor fee was temporarily cut by a fee waiver for twelve months starting January 11, 2024, leaving an effective fee of 0.12% of NAV on the first $5.0 billion of assets.
"For a twelve -month period, starting January 11, 2024, the Sponsor will waive a portion of the Sponsor’s fee so that the Sponsor’s fee after the fee waiver will be equal to 0.12 % of the net asset value of the Trust for the first $ 5.0 billion of the Trust’s assets."
10-Q iShares Bitcoin Trust ETF (IBIT) (CIK 0001980994) 2024-11-07
[11] documented
Certain costs are not covered by the sponsor fee and are borne by the trust, including bitcoin network fees and brokerage commissions, which further reduce the bitcoin held per share.
"The Trust may incur certain extraordinary, non-recurring expenses that are not assumed by the Sponsor, including but not limited to, taxes and governmental charges, any applicable brokerage commissions, financing fees, Bitcoin network fees and similar transaction fees"
10-Q Bitwise Bitcoin ETF (BITB) (CIK 0001763415) 2025-05-12
[12] supported
As of January 4, 2024, Shares quoted on OTCQX closed at $37.25, a 6% discount to the Trust's NAV per Share, after a 21% discount on September 29, 2023.
"As of January 4, 2024, the closing price of the Shares quoted on OTCQX was $37.25 and the Trusts Shares were quoted on OTCQX at a discount of 6% to the Trusts NAV per Share."
424B3 Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-01-11
[13] documented
During the period ended September 30, 2024, the sponsor waived $4,324,550 of its fee.
"For the period ended September 30, 2024, the amount waived was $ 4,324,550 ."
10-Q iShares Bitcoin Trust ETF (IBIT) (CIK 0001980994) 2024-11-07
[14] documented
The sponsor had waived the fee on the first $1 billion of trust assets until July 10, 2024, after which it began accruing 0.20% on net assets, so the fee drag on investors grew from that date.
"The Sponsor contractually waived the Sponsor Fee on the first $1 billion of the Trust assets through July 10, 2024, and has been accruing at an annual rate of 0.20% of the Trust’s net assets since then."
10-Q Bitwise Bitcoin ETF (BITB) (CIK 0001763415) 2025-05-12
[15] documented
The net asset value of a Bitcoin fund share is determined by the index price of Bitcoin minus the trust's expenses and other liabilities.
"Shares (based on BTC per Share) are designed to reflect the value of NTC held by the Trust. determined by reference to the Inclex Price, less the Trust's expenses and other liabilities."
FWP Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-10-17
[16] documented
Investors in Grayscale's Bitcoin Mini Trust (BTC) face a net cost to investment that includes an expense ratio, which can be subject to fee waivers.
"At an expense ratio of 0.15%, BTC has one of the lowest costs of ownership2 of all spot Bitcoin ETPs available on the market. Brokerage fees and other expenses may still apply."
FWP Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-10-17
[17] documented
The market price of Bitcoin fund shares can trade at a premium or discount to their net asset value, creating a price gap for investors.
"30D avg. bid ask spread premium/discount net flows since 7/31"
FWP Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-10-17
[18] documented
Grayscale's Bitcoin Mini Trust (BTC) has a specific fee waiver amount and end date that affects the net cost to the investor.
"Fee Waiver Amount: 0.03 Waiver End Date: 1/12/2025"
FWP Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-10-17
[19] documented
The spot price of Bitcoin used for valuation is determined by a weighted average of prices across multiple trading platforms based on liquidity.
"The spot price of Bitcoin is determined by market participants across multiple constituent tracing platforms. Each constituent trading platform is weighted proportionally to its trailing 24-hour liquidity with adjustments for price variance and inactivity."
FWP Grayscale Bitcoin Trust (BTC) (GBTC) (CIK 0001588489) 2024-10-17
[20] documented
Standard CME bitcoin futures settle to the BRR reference rate, while Bitcoin Friday futures settle to BRRNY, creating a distinction in settlement benchmarks.
"CME states that standard Bitcoin and Micro Bitcoin futures settle to BRR, while Bitcoin Friday futures settle to BRRNY."
Implied ETF Carry Rates and the Limits of Arbitrage in Segmented Bitcoin Markets
[21] documented
Investing in the Grayscale Bitcoin Mini Trust ETF is not equivalent to holding Bitcoin directly.
"An investment in the Fund is not a direct investment in Bitcoin."
FWP Grayscale Bitcoin Mini Trust ETF (BTC) (CIK 0002015034) 2025-09-15
[22] documented
The fund charges a gross expense ratio of 0.15%.
"*Low-fee based on gross expense ratio at 0.15%."
FWP Grayscale Bitcoin Mini Trust ETF (BTC) (CIK 0002015034) 2025-09-15
[23] documented
Investors may incur additional costs beyond the fund's expense ratio, such as brokerage fees.
"Brokerage fees and other expenses may still apply."
FWP Grayscale Bitcoin Mini Trust ETF (BTC) (CIK 0002015034) 2025-09-15
[24] documented
The fund's annual operating expenses are capped at 1.45% of the average daily net asset value, which reduces the value of a dollar invested compared to the underlying asset.
"Cboe Vest has contractually agreed to limit the Fund’s annual operating expenses to an annual rate of 1.45% of the average daily net asset value of each class of shares of the Fund, except for the Class Y shares where the Adviser has agreed to limit the total expenses to 1.25%, until February 28, 2023."
N-CSR World Funds Trust (CIK 0001396092) 2022-01-07
[25] documented
The fund does not hold physical Bitcoin but instead invests in cash-settled Bitcoin Futures, creating a structural difference between the fund's value and the spot price of the coins.
"cash-settled in U.S. dollars (“Bitcoin Futures”) and any one or more of the following: U.S. Treasuries, other U.S. government obligations, money market funds, cash and cash-like equivalents"
N-CSR World Funds Trust (CIK 0001396092) 2022-01-07
[26] documented
The fund's allocation to Bitcoin Futures ranged between 58% and 73% of net assets during its initial period, meaning a significant portion of the fund's value was in other instruments rather than direct exposure to Bitcoin.
"During the period from the Fund’s inception on August 13, 2021 through October 31, 2021 the percentage of the Fund’s net assets allocated to Bitcoin Futures ranged from approximately 58% to 73% which contributed to the majority of the Fund’s performance during that period."
N-CSR World Funds Trust (CIK 0001396092) 2022-01-07
[27] documented
The fund's 1.45% expense ratio is higher than the median net expense ratio of its specific peer group (1.41%) but lower than the broader category median (1.47%).
"The Trustees considered that this 1.45% expense ratio was higher than the 1.41% median net expense ratio of the peer group of funds selected by Broadridge from Morningstar’s Systematic Trend category but lower than the 1.47% median net expense ratio of the category overall."
N-CSR World Funds Trust (CIK 0001396092) 2022-01-07