Kalshi Politics — Mispricing Audit (Sentinel, managed)

Report date 2026-09-14 · Methodology v3.3 (conviction-weighted, EV-agnostic sizing; resolver-priced probabilities; no LOW-tier or sub-35¢ deployments) · Category-match mode: trading_events.category = 'Politics' · Horizon 45 days · Capital $1,000 · Picks count toward the public track record and are cleared for auto-copy.

Bottom line. An efficient week. Of 566 live Politics markets, 20 survived the mechanical screen and got full diligence, and only two cleared the v3 conviction and entry-band gates — both legs of one thesis: IMF PortWatch has printed 286–301 Suez Canal transit calls in every one of the last eleven weeks, and the Sep 14–20 ladder prices the 270 rung at 78¢ and the 260 rung at 86¢. Both deploy as MEDIUM conviction in the 60–90¢ favorites band, capped at 7% each and 13.9% for the cluster. $139 deployed, $861 held as cash. The headline-grabbing markets — the Xi state visit, Netanyahu at the UN, the Hormuz weekly ladder, the Bab el-Mandeb ladder after the Houthi seizure of the strait — were all either fully priced or genuinely unknowable and are logged as rejects.

1. How this was researched

2. Markets reviewed

Stage-2 candidates (post mechanical filter). Prices are YES bid/ask in cents at ~15:30 UTC on 2026-09-14. "Eff. entry" is the price paid for the side I would take.

TickerQuestion (short)YES bid/askVol 24hSideEff. entryMy probDisposition
KXSUEZWEEKLY-26SEP20-T270Suez transits Sep 14–20 > 27077/782,504YES7886PICK — MEDIUM
KXSUEZWEEKLY-26SEP20-T260Suez transits Sep 14–20 > 26085/861,776YES8692PICK — MEDIUM
KXHORMUZWEEKLY-26SEP13-T35Hormuz transits Sep 7–13 > 3543/465,512NO5770REJECT — coin-flip band
KXHORMUZWEEKLY-26SEP13-T30Hormuz transits Sep 7–13 > 3084/854,306NO1645REJECT — sub-35¢ tail
KXHORMUZWEEKLY-26SEP13-T40Hormuz transits Sep 7–13 > 407/89,644NO9395REJECT — thin
KXHORMUZMAX-26SEP13-SEP11Sep 11 is the peak Hormuz day38/421,010YES42REJECT — unpriceable
KXHORMUZWEEKLY-26SEP20-T30Hormuz transits Sep 14–20 > 3050/511,020NO5055REJECT — coin-flip, no edge
KXBABELMANDEBWEEKLY-26SEP13-T175Bab el-Mandeb transits Sep 7–13 > 17560/631,855NO4060REJECT — coin-flip band
KXBABELMANDEBWEEKLY-26SEP20-T175Bab el-Mandeb transits Sep 14–20 > 17527/281,029YES2830REJECT — tail
KXPANAMAWEEKLY-26SEP20-T200Panama transits Sep 14–20 > 20061/623,443YES6263REJECT — fairly priced
KXPANAMAWEEKLY-26SEP20-T225Panama transits Sep 14–20 > 2259/106,607NO9188REJECT — negative edge
KXXIUSA-26JUL07-OCT01Xi in the U.S. before Oct 193/9616,367YES9695REJECT — fully priced
KXNETANYAHUNYC-26JUL27-OCT01Netanyahu in NYC before Oct 192/963,004YES9693REJECT — negative edge
KXHEGSETHOUT-26AUG-26OCT01Hegseth out before Oct 14/62,722NO9697REJECT — thin
KXPRESSSECANNOUNCE-26AUG-OCT01Next press secretary named before Oct 121/223,251NO7982REJECT — edge ≤3¢
KXUAPFILES-26AUG10-26OCT02New UAP files released before Oct 263/681,590YES6868REJECT — no edge, 5¢ spread
KXTRUMPNOMNUM-26SEP13-T1≥1 nomination sent to Senate this week94/995,020YES99Cut: 5¢ spread at 99, no room
KXAPRPOTUS-26SEP18-39.5RCP approval 39.4–39.6 on Sep 1825/273,398Cut: 0.2-pt bucket, tail-band set
KXTRUTHSOCIAL-26SEP19-T240>240 Truth Social posts this week10/113,592Cut: posting-count noise bucket
KXACTBLUETOP-26SEP18-SBROSherrod Brown top ActBlue fundraiser Sep 186/72,291Cut: tail, OI 614

Also seen but mechanically filtered (not logged as rejects): KXSUEZWEEKLY-26SEP20-T280 YES at 65/66 — the best-looking rung on the Suez ladder by edge, but 24h volume was zero and open interest 27, so it fails Stage 1 and sits on the watchlist (see execution notes). KXGOVTSHUTDOWN-26OCT01 (0/2), KXCLARITYVOTE-26JUL-OCT01 (95/99) and KXHOUSEADJOURN-26-26SEP26 (98/99) were fully priced.

3. Picks — detail and thesis

Pick 1 — KXSUEZWEEKLY-26SEP20-T270 · BUY YES @ 0.78 · MEDIUM CONVICTION

Will there be more than 270 transit calls through the Suez Canal from Sep 14 to Sep 20, 2026, as reported by IMF PortWatch?

Limit / current: 78¢ limit · 77/78 live (last 78)
My probability vs market: 86% vs 78% implied
Conviction · entry band: MEDIUM · 60–90¢ favorites
Cluster: suez-transits-week-sep14-20
Size: 89 contracts · cost $69.42 (6.9% of capital, MEDIUM cap 7%)
Max payout / EV: $89.00 · +8.0¢/contract · +10.3% · $7.12 edge (record only, did not set size)

Mispricing thesis. The market is pricing a generic left tail into a series that has not shown one. The resolver's own dataset has printed the following Suez weekly totals (Mon–Sun, revised series) since the Hormuz-closure regime settled in late June: 298, 295, 289, 291, 286, 291, 287, 286, 294, 301, 291. The minimum is 286, sixteen transits above the 270 rung; the standard deviation is about 5. The 78¢ ask says roughly one week in five breaks that floor. My read is that the crowd is charging a Red Sea risk premium after this weekend's Houthi seizure of Bab el-Mandeb without checking that Suez volumes were unmoved by the entire July–September Houthi attack regime, during which Bab el-Mandeb fell from 284 to 178 per week and Suez stayed flat at ~290.

Evidence.

Resolver profile (Stage 2.5). Source: IMF PortWatch Daily Chokepoint Transit Calls, Suez Canal (AIS-based, 48-hour per-ship de-duplication, UTC dates, republished Tuesdays 09:00 ET). Mechanism: Kalshi sums the seven UTC days Sep 14–20 from the Tuesday Sep 22 09:00 ET republish, which is also the market close (13:00 UTC). Definitional boundaries: "transit calls" is PortWatch's own count; no discretion. Priced risks: −4 pts (Houthi escalation spills into Suez volumes within the week, e.g. container lines re-suspend Red Sea strings), −2 pts (Tuesday snapshot undercount vs later revision), −1 pt (AIS/data outage or a missing day in the republish). Evidence-based 93% → model_prob 86%.

Tail risks, cleanest first. (1) Houthi control of Mayyun/Mocha turns into a sustained attack campaign this week and Maersk/MSC/CMA CGM pull the strings they only just restored — a 20+ ship drop would be needed, and the lag from decision to Suez count is typically several days, but the week is seven days long. (2) A wider Red Sea incident north of Bab el-Mandeb (a Yanbu-area strike like the Aug 24 VLCC hit) that halts Saudi northbound liftings. (3) A PortWatch publishing glitch that prints an incomplete week on Sep 22.

Liquidity / entry context. YES bid 77 (639 contracts), YES ask 78 (553 contracts fillable at the limit; next 100 at 81). 24h volume 2,504; open interest 2,332; market opened Sep 11 16:30 UTC. Price history (14d): first prints Sep 13 at 76¢; 2,272 contracts traded Sep 14 between 73¢ and 77¢ (mean 74.5¢); last 78¢. No ≥20¢ move; the price has drifted up 2–5¢ since open, so the edge has not been eaten but has narrowed.

Pick 2 — KXSUEZWEEKLY-26SEP20-T260 · BUY YES @ 0.86 · MEDIUM CONVICTION

Will there be more than 260 transit calls through the Suez Canal from Sep 14 to Sep 20, 2026, as reported by IMF PortWatch?

Limit / current: 86¢ limit · 85/86 live (last 86)
My probability vs market: 92% vs 86% implied
Conviction · entry band: MEDIUM · 60–90¢ favorites
Cluster: suez-transits-week-sep14-20 (same as Pick 1)
Size: 81 contracts · cost $69.66 (7.0% of capital, MEDIUM cap 7%)
Max payout / EV: $81.00 · +6.0¢/contract · +7.0% · $4.86 edge (record only, did not set size)

Mispricing thesis. Same series, one rung safer. 260 is 26 transits (about 9%) under the lowest week the current regime has produced and 31 under the mean. The 86¢ ask implies a one-in-seven collapse; the data support something closer to one-in-twelve even after charging for the Houthi shock. The two legs are deliberately taken together within one cluster: the 270 leg carries most of the edge, the 260 leg cushions the case where the week is merely weak rather than broken (a 261–270 print pays this leg and not the other).

Evidence. As for Pick 1 — the eleven-week PortWatch run of 286–301, the Lloyd's List account of why Suez is elevated (Saudi Yanbu → Suez/Sidi Kerir crude flow plus returning liner strings), and the settlement reconciliation showing Kalshi settles off the Tuesday PortWatch republish with at most a few-transit undercount.

Resolver profile (Stage 2.5). Identical source and mechanism to Pick 1. Priced risks: −2 pts (Houthi spillover; a 31-transit drop is needed here, so the same scenario is less likely to reach this rung), −1 pt (snapshot undercount), −1 pt (data outage). Evidence-based 96% → model_prob 92%.

Tail risks. Exactly the failure mode of Pick 1, at larger magnitude: a liner re-suspension plus a halt in Saudi northbound liftings inside the same week. Because the two legs share it, the cluster cap is the risk control — see Section 4.

Liquidity / entry context. YES bid 85 (1,615 contracts), YES ask 86 (1,494 contracts fillable at the limit; next 100 at 90). 24h volume 1,776; open interest 1,707; opened Sep 11 16:30 UTC. Price history (14d): all 1,776 contracts traded Sep 14, between 84¢ and 86¢; last 86¢. No large moves.

4. Recommended $1,000 portfolio

#TickerSideLimitConvictionBandContractsCostMax payoutModel pEV ¢EV %Cluster
1KXSUEZWEEKLY-26SEP20-T270BUY YES78MEDIUM60–90¢89$69.42$89.0086%+8.0+10.3%suez-transits-week-sep14-20
2KXSUEZWEEKLY-26SEP20-T260BUY YES86MEDIUM60–90¢81$69.66$81.0092%+6.0+7.0%suez-transits-week-sep14-20
Totals$139.08$170.00$11.98+8.6%

Total deployed $139.08 (13.9%) · cash held $860.92 (86.1%) · max payout $170.00 · max profit $30.92 · blended EV +8.6% · dollar edge +$11.98. EV figures are for the calibration record; they did not drive contract counts — the sizes are the MEDIUM-tier cap ($70 each) truncated to whole contracts.

Cluster exposure (cap 15% = $150 per cluster)

ClusterLegsCost% of capitalCapStatus
suez-transits-week-sep14-20T270 YES, T260 YES$139.0813.9%15.0%within cap
cash$860.9286.1%

Conviction exposure

TierPicksCost% of capitalPer-pick cap
HIGH0$0.000.0%15% ($150)
MEDIUM2$139.0813.9%7% ($70)
LOW0$0.000.0%never deploys (v3.3)

Risk profile

Execution notes

5. What I rejected and why

All fourteen rejects below are machine-logged in picks.json and shadow-tracked to settlement, so the selection screen itself is testable. Entry-band cuts (Stage 3.5) are marked.

TickerSide I'd takePriceMy pReason
KXHORMUZWEEKLY-26SEP13-T35NO5770Stage 3.5 — coin-flip band, conviction not HIGH. Five of the last six PortWatch Hormuz weeks were ≤35 (39, 31, 35, 30, 22) and live trackers put mid-September at 3–8 ships/day, so NO looks right on the data. But the week has no published dailies yet, the peak-day ladder (Sep 11 at 38/42) says traders believe there was a convoy spike I cannot see, and PortWatch is AIS-only so a US-escorted convoy would print. Edge ≈14¢, below the 15¢ bar for a coin-flip, and I cannot claim HIGH.
KXHORMUZWEEKLY-26SEP13-T30NO1645Stage 3.5 — sub-35¢ tail, hard reject. The most "mispriced-looking" contract in the category (market 84% for >30 vs a 22-transit week just printed), and exactly the kind of resolver-lag tail (cf. KXMAXSHIPSHORMUZ-26JUL31-AL50) that v3.2 removed. Logged so the shadow record can argue.
KXHORMUZWEEKLY-26SEP13-T40NO9395Deep favorite, 2–3¢ of edge, and it would stack Hormuz exposure onto a book that already holds a Hormuz NO (KXHORMUZNORM-26MAR17-B261001, an existing pick).
KXHORMUZMAX-26SEP13-SEP11YES42Single-day peak with no data; unpriceable. 4¢ spread.
KXHORMUZWEEKLY-26SEP20-T30NO5055Stage 3.5 — coin-flip, no edge. Recent weeks straddle 30 and an Omani reopening plan (CNN, Sep 13) is a live upside shock.
KXBABELMANDEBWEEKLY-26SEP13-T175NO4060Stage 3.5 — coin-flip band, conviction not HIGH. The prior two weeks printed 184 and 178 (barely over the line) and the Houthis took Mocha and Mayyun over Sep 10–13, mid-week. Sep 7–10 were probably normal (~25/day); Sep 11–13 could be anything. Resolver deduction exceeds what I can price — a textbook "great forecast on an unknowable resolver."
KXBABELMANDEBWEEKLY-26SEP20-T175YES2830Stage 3.5 — tail, and the market already reflects the post-seizure collapse. No edge either way.
KXPANAMAWEEKLY-26SEP20-T200YES6263Fairly priced. Last five PortWatch weeks: 210, 208, 187, 204, 210; weekly SD ≈ 10. The market's 62% is my 63%.
KXPANAMAWEEKLY-26SEP20-T225NO9188Negative edge. Three of the thirteen weeks since June exceeded 225 (228, 230, and 266 — the last one on the back of an 83-transit PortWatch glitch day on Jul 13), so the 9–10¢ YES is fair to cheap.
KXXIUSA-26JUL07-OCT01YES9695Fully priced. The state visit is scheduled for Sep 24 (invited at Busan, Oct 30 2025; confirmed during Trump's May 2026 Beijing visit). A 96¢ ask leaves nothing for a postponement in an active Iran war.
KXNETANYAHUNYC-26JUL27-OCT01YES9693Negative edge. Netanyahu is scheduled to arrive late Sep 23, speak Sep 24 and fly home the same night; but a same-day trip during an ongoing Iran/Lebanon campaign, with ICC-warrant routing constraints, has a 5–8% cancellation risk that 96¢ does not pay for.
KXHEGSETHOUT-26AUG-26OCT01NO9697Deep favorite, ~1¢. Tillis's Sep 2 call to replace him and Driscoll's resignation letter have not moved Trump, but there is nothing to earn.
KXPRESSSECANNOUNCE-26AUG-OCT01NO7982Edge ≤3¢ after resolver pricing. NBC: the White House "might not name a new press secretary until after the midterms"; the Sep 15 leg at 1/2 confirms no acting/interim designation yet. But the rules pay YES on any Trump announcement naming an acting or interim secretary (−4 pts), and Scott Jennings is a reported front-runner. Not defensible as a MEDIUM.
KXUAPFILES-26AUG10-26OCT02YES6868No edge, 5¢ spread. Cadence May 8 → May 22 → Jun 12 → Jul 10 → Aug 7 (gaps 14/21/28/28 days) is already ten days overdue with nothing since Aug 7; the "any federal agency, any UAP document" breadth helps YES but also makes the resolver's call hard to predict.

Discipline summary. Stage 3.5 cut four coin-flips and two tails, including the two contracts with the largest raw "edge" in the category (Hormuz T30 NO and T35 NO). That is the screen working as designed: the resolved record says those are where the book bled. If the shadow track shows these rejects settling in my favour at a rate that beats the picks, that is a finding for v4 — and it is now measurable.

6. Sources

Data sources: Kalshi mirror DB (read-only query API; schema fetched 2026-09-14, no market_snapshots table present), Kalshi public trade API v2 (prices, orderbooks, candlesticks, settled results), IMF PortWatch ArcGIS feature service, and the news sources linked above. Disclaimer: all probabilities are subjective estimates by the author; prediction-market contracts resolve to $0 or $1 and the entire cost of a losing position is lost. EV and edge figures are recorded for calibration and did not determine position sizes. Nothing here is investment advice. Methodology v3.3; picks are cleared for auto-copy and count toward the public track record; rejects are shadow-tracked.