Price parity monitoring · Robinhood Chain
A tokenized share and the share itself are priced in two different markets. Parity Finance reads both, and prints the distance between them as one signed number.
The pool quote comes off the chain. The reference comes from the venue where the real equity trades. Every figure on this page can be checked by hand against the formula we publish, because a monitor nobody can audit is worth nothing when it matters.
01 · The problem
When an equity is tokenized on Robinhood Chain, the thing that trades on chain is a token sitting in a Pons liquidity pool. That pool sets its own price out of its own reserves and its own order flow. The share it is named after trades on a stock exchange, on a different book, against different participants, during different hours.
Nothing in the design of either venue forces those two prices to agree at any given second. What usually keeps them close is arbitrage, and arbitrage is not free. Somebody has to be awake, funded on both sides at once, and willing to carry the settlement risk in between. When that trade clears its costs, the gap closes in minutes. When the spread is too thin to cover fees, or the pool is too shallow to absorb the size, or the exchange is simply shut, the gap stays open and gets no smaller on its own.
The situations where it widens are not mysterious. Equity markets keep business hours and liquidity pools do not, so every overnight and weekend session runs with no fresh reference price to correct against. Scheduled news lands outside the session and the pool has to take a position on it before the exchange has voted. One large order against thin reserves can move a pool by several percent where the same order would barely register on the primary book.
None of this is a flaw in tokenization and none of it is concealed. It is the ordinary behavior of two venues that clear separately. The practical problem is narrower than that: most people holding a tokenized position only ever look at one of the two prices. They read the pool quote, treat it as the share price, and discover the difference at the worst possible time, which is the moment they try to leave.
02 · How it works
Parity Finance does a single job. It puts the pool price and the reference price next to each other and reports the distance between them, with the age of both inputs attached so you can judge how much the answer is worth.
The pool price is derived from the reserves of the Pons pool holding the tokenized share on Robinhood Chain. Reserves are the honest input: they describe the price a trade would actually clear at right now, including the effect of size, rather than a quote posted somewhere and left to go stale.
The reference is the price of the underlying equity on its primary listing venue. When that venue is closed, the last traded price is carried forward and stamped with the time it was set. A closed market does not produce a new price, and inventing one would bury the exact condition worth surfacing.
Deviation is the pool price minus the reference price, divided by the reference price, in percent, signed. Positive says the pool is asking more than the exchange. Negative says it is asking less. The same expression is printed under the calculator below so any result here can be reproduced on paper.
Inside one percent is parity. Between one and four percent is drift worth watching. Past four percent is a divergence. The band is shown with the reference timestamp beside it, because a wide reading against a twelve hour old reference means something very different from the same reading at midday.
Schematic, not recorded data. During the session both prices are pulled together by traders working the gap. After the close only one of them can still move, and the shaded area is the deviation the calculator reports.
03 · Calculator
Enter what the pool is quoting and what the share last traded for. Deviation, basis in dollars and the band update as you type. The arithmetic runs in your browser on the two numbers you type in. It is not wired to a live feed, and it does not know what any real pair is doing right now.
Enter two prices to read the gap.
deviation = (pool − reference) ÷ reference × 100
Illustrative. The figures you type are the only inputs. No market data, no on-chain read, no stored result.
Six made-up pairs, chosen to show how the bands read rather than to describe any real market. Select a row to load those two prices into the calculator above.
| Pair | Pool quote | Reference | Deviation | Band | Load into calculator |
|---|---|---|---|---|---|
| NVDA | $187.32 | $189.90 | -1.36% | Drift | |
| AAPL | $241.05 | $240.88 | +0.07% | Parity | |
| TSLA | $428.60 | $411.15 | +4.24% | Diverged | |
| MSFT | $502.10 | $503.44 | -0.27% | Parity | |
| AMZN | $219.40 | $226.77 | -3.25% | Drift | |
| SPY | $611.98 | $612.30 | -0.05% | Parity |
Illustrative figures. These prices were written for this page to demonstrate the bands. They are not quotes, not historical observations, and not a statement about any listed company or any pool.
04 · Methodology
A parity reading is only useful if you know exactly how it was produced. The six points below are the whole method. There is no seventh step where judgment gets applied quietly.
Taken from the reserve balances of the Pons pool that holds the tokenized share on Robinhood Chain, read at the block level. Reserve-derived pricing describes what a trade would clear at, so it moves when someone actually trades and stays put when nobody does. A pool with no recent activity is reported as untraded rather than as agreeing with the exchange.
The last traded price of the underlying equity on its primary listing venue. During the session it advances with the tape. Outside the session it is held at the closing print and labeled as held, with the time of that print shown alongside. Extended-hours prints are not substituted in, because their depth is not comparable to the regular session and a thin print would quietly move the reference everything else is measured against.
Pool price minus reference price, divided by reference price, multiplied by one hundred. The reference sits in the denominator so the figure reads as a premium or discount to the equity, which is the direction anyone holding the token cares about. The sign is kept: a pool trading rich and a pool trading cheap are different problems and they are never collapsed into one absolute number.
Under one percent is parity, one to four percent is drift, above four percent is a divergence. One percent sits above ordinary round-trip friction, so a reading inside it usually says nothing more than that trading costs exist. Four percent is where the gap stops being explainable by fees alone and starts describing the state of the pool. The thresholds are fixed across every pair, and they are printed here so a reading can be reclassified by hand if a different tolerance suits the position.
Both sides carry an age. When the reference is held overnight, the deviation is still computed and still shown, with the hold clearly marked. This is deliberate. Overnight is when the gap is widest and least corrected, so suppressing the reading would remove the measurement precisely where it carries the most information.
Parity Finance does not forecast prices, does not publish a fair value of its own, does not execute or route any trade, and does not tell anyone what to do with a position. It reports the distance between two observed prices and the confidence conditions attached to each. Every decision made from that number belongs to the person reading it.
05 · Questions
No. It means the two venues disagree. Which one is closer to fair value is a separate question, and on a day when the equity market is closed the pool may well be the more current of the two. What the number tells you is the size of the gap you are exposed to when you enter or exit through the pool.
The reference is held at the last regular-session print and marked as held. The pool keeps trading, so the deviation typically widens across the night and snaps back in the first minutes after the exchange reopens. Both the reading and the hold flag stay visible the whole time.
It is a measurement, not a recommendation. A four percent gap can persist for hours, widen further, or close in a single trade, and nothing in the method predicts which. The deviation tells you what the gap is, and the timestamps tell you how much to trust it.
Any tokenized equity with a Pons pool on Robinhood Chain and a listed underlying with a primary venue price. The examples on this page use familiar tickers so the arithmetic is easy to follow, and the numbers in them were written for the demonstration.
The pool quote is one of two prices. Parity Finance exists so the other one is never the part you find out about afterwards.
