Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

CME GROUP INC.

CME · Nasdaq · CIK 0001156375 · Financial Services · Financial Data & Stock Exchanges

INSIDER SIGNAL

No active buy signal

2 qualifying P purchase groups
in the current 180-day scoring window

85 Form 4 transaction lines observed in the same window
6 sales · 76 option, withholding, award, gift or other lines

Last qualifying purchase2026-09-25 · SHEPARD WILLIAM R · $78.6K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
SHEPARD WILLIAM RDirector
○●○●
Sammann DerekSr MD Gl Hd Commodities Mkts
○○○○
Winkler JulieSr MD Chief Commercial Officer
○○○
Vroman KenChief Transformation Officer
○○○
Tobin Jack JMD Chief Accounting Officer
○○○
Sprague SuzanneCOO & Global Head of Clearing
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 16 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: SHEPARD WILLIAM R · $156.8K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-06-25–2026-06-25

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-09-25 · SHEPARD WILLIAM R.

Recent Form 4 activity

7Purchases
18Sales
106Other Form 4 lines
60SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING6 sale line(s) · context only
OTHER76 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
5,526,063
Previous report
5,801,564
Avg daily volume
1,744,545
Days to cover
3.2

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A293USD 268.76USD 78,626SEC filing ↗
2026-06-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A339USD 230.57USD 78,186SEC filing ↗
2026-03-26SHEPARD WILLIAM RPurchase (P)Common Stock Class A1,470USD 297.38USD 437,101SEC filing ↗
2025-12-30SHEPARD WILLIAM RPurchase (P)Common Stock Class A262USD 278.37USD 73,008SEC filing ↗
2025-09-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A274USD 265.19USD 72,673SEC filing ↗
2025-06-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A267USD 270.53USD 72,337SEC filing ↗
2025-03-26SHEPARD WILLIAM RPurchase (P)Common Stock Class A274USD 262.62USD 71,995SEC filing ↗
2025-01-16SHEPARD WILLIAM RPurchase (P)Common Stock Class A1,422USD 227.96USD 324,198SEC filing ↗
2025-01-16SHEPARD WILLIAM RPurchase (P)Common Stock Class A1,429USD 227.96USD 325,798SEC filing ↗
2024-12-27Benesh KathrynPurchase (P)Common Stock Class A8USD 232.77USD 1,802SEC filing ↗
2024-12-27SHEPARD WILLIAM RPurchase (P)Common Stock Class A276USD 232.89USD 64,285SEC filing ↗
2024-09-25Benesh KathrynPurchase (P)Common Stock Class A8USD 218.52USD 1,794SEC filing ↗
2024-09-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A293USD 218.50USD 63,946SEC filing ↗
2024-06-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A326USD 195.07USD 63,569SEC filing ↗
2024-03-26SHEPARD WILLIAM RPurchase (P)Common Stock Class A294USD 214.71USD 63,232SEC filing ↗

Form 4 evidence

131 transaction lines in the latest 365-day window; 1,013 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A293USD 268.76USD 78,626SEC filing ↗
2026-09-16Winkler JulieTax withholding (F)Common Stock Class A359USD 272.46USD 97,813SEC filing ↗
2026-09-16Vroman KenTax withholding (F)Common Stock Class A308USD 272.46USD 83,918SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-25SHEPARD WILLIAM RPurchase (P)Common Stock Class A293USD 268.76USD 78,626SEC filing ↗
2026-09-16Winkler JulieTax withholding (F)Common Stock Class A359USD 272.46USD 97,813SEC filing ↗
2026-09-16Vroman KenTax withholding (F)Common Stock Class A308USD 272.46USD 83,918SEC filing ↗
2026-09-16Tobin Jack JTax withholding (F)Common Stock Class A51USD 272.46USD 13,895SEC filing ↗
2026-09-16Sprague SuzanneTax withholding (F)Common Stock Class A308USD 272.46USD 83,918SEC filing ↗
2026-09-16Sammann DerekTax withholding (F)Common Stock Class A359USD 272.46USD 97,813SEC filing ↗
2026-09-16McCourt Timothy FrancisTax withholding (F)Common Stock Class A364USD 272.46USD 99,175SEC filing ↗
2026-09-16Marchese John CliffordTax withholding (F)Common Stock Class A44USD 272.46USD 11,988SEC filing ↗
2026-09-16Fitzpatrick LynneTax withholding (F)Common Stock Class A359USD 272.46USD 97,813SEC filing ↗
2026-09-16Dennis Michael G.Tax withholding (F)Common Stock Class A274USD 272.46USD 74,654SEC filing ↗
2026-09-16Cutinho SunilTax withholding (F)Common Stock Class A359USD 272.46USD 97,813SEC filing ↗
2026-09-15Winkler JulieTax withholding (F)Common Stock Class A1,054USD 275.09USD 289,945SEC filing ↗
2026-09-15Winkler JulieAward / grant (A)Common Stock Class A2,864USD 275.09USD 787,858SEC filing ↗
2026-09-15Vroman KenTax withholding (F)Common Stock Class A903USD 275.09USD 248,406SEC filing ↗
2026-09-15Vroman KenAward / grant (A)Common Stock Class A2,592USD 275.09USD 713,033SEC filing ↗
2026-09-15Tobin Jack JTax withholding (F)Common Stock Class A296USD 275.09USD 81,427SEC filing ↗
2026-09-15Tobin Jack JAward / grant (A)Common Stock Class A700USD 275.09USD 192,563SEC filing ↗
2026-09-15Sprague SuzanneTax withholding (F)Common Stock Class A844USD 275.09USD 232,176SEC filing ↗
2026-09-15Sprague SuzanneAward / grant (A)Common Stock Class A2,864USD 275.09USD 787,858SEC filing ↗
2026-09-15Sammann DerekTax withholding (F)Common Stock Class A1,054USD 275.09USD 289,945SEC filing ↗
2026-09-15Sammann DerekAward / grant (A)Common Stock Class A2,864USD 275.09USD 787,858SEC filing ↗
2026-09-15McCourt Timothy FrancisTax withholding (F)Common Stock Class A970USD 275.09USD 266,837SEC filing ↗
2026-09-15McCourt Timothy FrancisAward / grant (A)Common Stock Class A2,592USD 275.09USD 713,033SEC filing ↗
2026-09-15Marchese John CliffordTax withholding (F)Common Stock Class A197USD 275.09USD 54,193SEC filing ↗
2026-09-15Marchese John CliffordAward / grant (A)Common Stock Class A784USD 275.09USD 215,671SEC filing ↗
2026-09-15Fitzpatrick LynneTax withholding (F)Common Stock Class A981USD 275.09USD 269,863SEC filing ↗
2026-09-15Fitzpatrick LynneAward / grant (A)Common Stock Class A4,088USD 275.09USD 1,124,568SEC filing ↗
2026-09-15Dennis Michael G.Tax withholding (F)Common Stock Class A274USD 275.09USD 75,375SEC filing ↗
2026-09-15Dennis Michael G.Award / grant (A)Common Stock Class A2,592USD 275.09USD 713,033SEC filing ↗
2026-09-15DUFFY TERRENCE AAward / grant (A)Common Stock Class A21,812USD 275.09USD 6,000,263SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCME
CIK0001156375
SectorFinancial Services
IndustryFinancial Data & Stock Exchanges Yahoo Finance
SEC SIC6200 Security & Commodity Brokers, Dealers, Exchanges & Services
ExchangeNasdaq

Data coverage

Local Form 4 history1,013 transaction lines from 2020-01-03 to 2026-09-25
59 P purchase lines · 175 S sale lines · 779 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.