SUN · nothing can print it, but the locks keep opening.
SUN is the governance coin of SUN.io, the biggest trading and staking hub on TRON. Its supply is fixed at 19.9B and the contract has no way to make more — no issuance function was ever written into it. 19.22B is circulating; the rest has already been burned. So the only two things that can move supply are coins coming out of locks, and coins going into the fire.
Sell pressure. Holders lock SUN for six months to earn a share of trading fees. Over the last 90 days more locks expired than were opened, handing 43.9M SUN back to owners free to sell. Nothing else moved — the eight biggest wallets sat still all quarter.
Buy pressure. SUN.io spends a slice of its trading, launchpad and perpetuals revenue buying SUN and burning it. One round landed on Jul 25 2026 and destroyed 9.0M SUN — real, permanent, and about a fifth the size of the coins coming out of locks.
Net. About +0.18% to market over 90 days, and roughly the same again next — a token that cannot inflate, drifting up anyway because the burn is smaller than the unlocking.
- Next quarterly buyback-and-burn−9.0M SUNOct 2026 · removed from market
The SUN contract has no way to create a coin. Its deployed code carries only the plain transfer and approval functions — there is no issuance function written into it at all, and no owner who could add one. The chain's total has read the same 19.9B since the token was issued in May 2021, and nothing in the design can change that.
There is no unlock calendar left. The four-year linear release on the DAO governance allocation dates from the 2021 relaunch and has run out, and SUN.io restated its own supply accounting in April 2025 to fold every previously restricted coin into the circulating count. Because nothing can be minted, any release still to come would only move coins that are already counted.
Eight wallets hold about 15.9B SUN between them and all eight were read at both ends of the window. Six of them were filled in a single hand-out in April 2025 and have not moved a coin since May 2025 — nothing at all inside this window. The eighth, holding 2.52B, did send out 4.9M on Jun 26 2026, but its own funding arrives from a large exchange's hot wallet, which makes it customer custody rather than a project reserve. Nothing here is on a schedule, and nothing here fired.
No bankruptcy estate or court-ordered distribution touches SUN. Neither SUN.io nor SunSwap has entered any insolvency or trustee process, so there is no estate holding coins that could be handed out.
This is the biggest force on the page and the easiest one to miss. Holders lock SUN for six months to earn a share of trading fees, and when a lock runs out the coins go back to the owner, free to sell. Over the window the lock vault released 44.1M SUN and took only 0.2M of fresh locks in — a net 43.9M returning to the market. The vault still holds 524.4M, of which 501.9M is locked, so the drain has plenty left to run. No calendar or supply feed reports this; it only shows up by reading the vault at both ends.
SUN.io keeps a slice of every SunSwap trade — 0.05% of the fee — plus the revenue its launchpad and perpetuals venue earn, converts it to SUN and sends it to the burn address, where it can never come back. One round settled inside the window, on Jul 25 2026, destroying 9,025,027 SUN worth about $166K. That round matches SUN.io's own published figure to the cent, and the burn address balance confirms the coins moved. About 678.5M SUN has now been destroyed since December 2021.
There is no second, separate burn. The contract has no destroy function at all, so the only way to remove a SUN is to send it to the burn address — which is exactly what the revenue buyback already does. Counting it again here would double the one real force on this side of the page.
There is no treasury buying on the side. Every SUN the programme buys is destroyed rather than kept, so nothing piles up in a wallet that a later decision could sell back into the market — monitored.
New six-month locks did happen — about 0.2M SUN over the window — but they are already counted inside the lock row on the sell side, which reports the vault's net movement. Putting them here as well would count the same mechanism twice.
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