A bid that only moves up.

Thirty percent of collected fees is placed as one single-tick, quote-only Uniswap v4 position under the spot. On Arc the quote is USDC. On a Robinhood ETH pair it is ETH. On a stock pair it is the stock, and that 30% never leaves the stock pool.

The tick is the highest price at which that quote can buy every token sitting in wallets. Tokens still inside the launch position are not in that count. With the curve’s liquidity L, the current price s, the quote W in the wall, and C tokens in circulation, the wall price x solves:

W  =  ( C  −  L × (1/x  −  1/s) )  ×  x²

That price is rounded down to the tick spacing of 10. The wall stays one tick under the spot, and it is never placed below the opening tick. If a wall is already standing, the new one is not placed lower than it.

A new token has no floor until fees have been collected. The $5,000 open is not a bid. Read The open.

What a round does

Anyone may rebalance the wall. The keeper does it when fees are collected. A round withdraws the standing wall, burns the tokens that wall bought, and places all of the quote again at the new tick. One wall per pool.

• Sales burn tokens, so there are fewer to absorb, and the floor can move up.
• Buys add quote, so there is more to bid with, and the floor can move up.
• A drop in the spot price does not move the floor down.
• The floor is never placed below the opening price.
• Tokens the wall buys are burned. They do not go to a wallet.

What it does not do

It does not guarantee a sale, and it does not sit under the open waiting for a full exit. If the price is already back at the opening tick, there is no room beneath the spot for a new bid. Holders still need a buyer in the launch pool.

The pool stays a normal v4 pool. Other interfaces trade it without Parabolarc-specific code. The wall is just another position in that pool.