Case Studies
How engineering teams use ATOMiK to eliminate reconciliation overhead, reduce bandwidth by 97%+, and replace database triggers with O(1) change detection.
P&L reconciliation across 4 venues in real time
founded
2019
employees
85
location
Chicago, IL
stack
C++ matching engine, Python analytics, 4 exchange venues
QuantumEdge operated across NYSE, NASDAQ, CBOE, and a dark pool. End-of-day P&L reconciliation required collecting full position snapshots from all four venues, merging them with conflict resolution logic, and running validation checks. The process took 45 minutes and involved three engineers babysitting the pipeline every market close. Intraday exposure estimates were stale by 8-12 seconds during peak volume, and the firm had experienced two incidents where latency in reconciliation masked a rogue position for over 90 seconds.
ATOMiK replaced the snapshot-and-merge pipeline with delta streaming. Each venue sends 8-byte XOR deltas as trades execute. Because delta accumulation is commutative and associative, venue deltas arrive in any order and the accumulator converges to the correct aggregate P&L without coordination. Self-inverse deltas handle trade cancellations natively -- applying the same delta a second time reverses it, eliminating compensating event logic.
Architecture
Venue A (NYSE) ─── delta stream ───┐
Venue B (NASDAQ) ─── delta stream ───┤
Venue C (CBOE) ─── delta stream ───┼──► ATOMiK Accumulator ──► Real-time P&L
Venue D (Dark Pool) ── delta stream ───┘ │
├──► Risk Dashboard
O(1) READ
└──► Compliance FeedImplementation
from atomik_core import AtomikContext
# Start-of-day: flat position
pnl = AtomikContext()
pnl.load(0)
# Trades arrive from venues in any order
for trade in venue_stream:
pnl.accum(trade.delta) # O(1) per trade
# Real-time exposure — always current
exposure = pnl.read() # O(1), no replay
# Cancel a trade: self-inverse
pnl.accum(cancelled_trade.delta) # XOR cancels itself“We went from a 45-minute end-of-day prayer to a number we trust in real time. The fact that order doesn't matter isn't a convenience -- it's what made multi-venue reconciliation actually solvable without a centralized sequencer.”
David Chen
VP of Trading Infrastructure, QuantumEdge Capital
Combined Annual Savings
Across 3 deployments
Average Reduction
In bandwidth, latency, or overhead
Consistent Complexity
Regardless of data size or history depth
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