v3.26.3
COMBINED STATEMENTS OF CHANGES IN NET ASSETS - USD ($)
 3 Months Ended 7 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2026
Net assets, beginning of period $ 11,733,692 $ 4,066,210 $ 2,513,378 [1] $ 10,215,391
Net investment income (loss) (7,243) (1,009) (1,009) (17,192)
Net realized gain (loss) from Digital Assets sold for the redemption of Shares, sold to pay expenses and rebalancing (94,156) 116 315 (135,238)
Net change in unrealized appreciation (depreciation) on investments in Digital Assets 5,765,858 459,814 1,028,699 1,648,404
Net increase (decrease) in net assets resulting from operations 5,664,459 458,921 1,028,005 1,495,974
Increase (decrease) in net assets from capital share transactions:        
Contributions for Shares issued [2] 1,608,688 3,060,911 4,044,659 7,295,474
Distributions for Shares redeemed (1,981,975) 0 0 (1,981,975)
Net increase (decrease) in net assets from capital share transactions (373,287) 3,060,911 4,044,659 5,313,499
Net assets, end of period 17,024,864 7,586,042 7,586,042 17,024,864
Franklin Crypto Index ETF [Member]        
Net assets, beginning of period 11,733,692 4,066,210 2,513,378 [1] 10,215,391
Net investment income (loss) (7,243) (1,009) (1,009) (17,192)
Net realized gain (loss) from Digital Assets sold for the redemption of Shares, sold to pay expenses and rebalancing (94,156) 116 315 (135,238)
Net change in unrealized appreciation (depreciation) on investments in Digital Assets 5,765,858 459,814 1,028,699 1,648,404
Net increase (decrease) in net assets resulting from operations 5,664,459 458,921 1,028,005 1,495,974
Increase (decrease) in net assets from capital share transactions:        
Contributions for Shares issued [3] 1,608,688 3,060,911 4,044,659 7,295,474
Distributions for Shares redeemed (1,981,975) 0 0 (1,981,975)
Net increase (decrease) in net assets from capital share transactions (373,287) 3,060,911 4,044,659 5,313,499
Net assets, end of period $ 17,024,864 $ 7,586,042 $ 7,586,042 $ 17,024,864
[1] On January 22, 2025, Franklin Resources, Inc. (the “Seed Capital Investor”), an affiliate of the Sponsor, subject to conditions, purchased 4,000 Shares at a per-Share price equal to $25.00 (the “Initial Seed Shares”). Delivery of the Initial Seed Shares was made on January 22, 2025. Total proceeds to the Fund from the sale of the Initial Seed Shares were $100,000. On February 10, 2025, the Initial Seed Shares were redeemed for $100,000, and the Seed Capital Investor purchased two Creation Units in a cash transaction comprised of a total of 100,000 Shares at a per-Share price based on 11.06240875 bitcoin and 61.7774073 ether per Creation Unit, for a total of 22.1248175 bitcoin and 123.5548146 ether (the “Seed Creation Units”). The cash proceeds to the Fund from the sale of the Seed Creation Units were used by the Fund to purchase 22.1248175 bitcoin at the price of $97,227.80 per bitcoin and 123.5548146 ether at the price of $2,665.23 per ether on February 10, 2025 (exclusive of transaction and other costs incurred in connection with the conversion of the cash proceeds to bitcoin and ether respectively, which were paid by the Seed Capital Investor). Thus, the ultimate total proceeds to the Fund from the sale of the Seed Creation Units were $2,480,449.33 (an amount representing 22.1248175 bitcoin and 123.5548146 ether) representing 100,000 shares at a per-Share price equal to $24.80. Further, the transaction and other costs incurred in connection with the Seed Creation Units were paid by the Seed Capital Investor and not borne by the Fund.
[2] Dollar amount of balance represents the cumulative fair value of creation of Shares less the redemption of Shares, at the time of the specific creation or redemption.
[3] Dollar amount of balance represents the cumulative fair value of creation of Shares less the redemption of Shares, at the time of the specific creation or redemption.