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

AFFILIATED MANAGERS GROUP, INC.

AMG · NYSE · CIK 0001004434 · Financial Services · Asset Management

INSIDER SIGNAL

No active buy signal

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

14 Form 4 transaction lines observed in the same window
3 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2026-06-01 · FRANQUI ANNETTE · $228.7K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesLow
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
Palandjian Tracy P.Director
○○○
Horgen Jay C.President and CEO
○○▼
Matos Rodriguez Felix V.Director
▼○○
FRANQUI ANNETTEDirector
●○
Ryan David ChristopherDirector
▼
Cates G. StaleyDirector
●
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION67%Largest buyer: Cates G. Staley · $458.7K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-06–2026-05-06

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: 2026-06-01 · FRANQUI ANNETTE.

Recent Form 4 activity

2Purchases
5Sales
31Other Form 4 lines
24SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER9 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+4.2%
3M
+4.2%
6M
+39.9%
12M
—

Volatility & liquidity

Volatility
33.0%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
34.5%
ROE
22.1%
Industry
Asset Management

Market data

Price data up to: 2026-10-03 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

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

Shares short
1,009,113
Previous report
1,039,423
Avg daily volume
334,669
Days to cover
3.0

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
2026-06-01FRANQUI ANNETTEPurchase (P)Common Stock750USD 304.88USD 228,660SEC filing ↗
2026-05-06Cates G. StaleyPurchase (P)Common Stock1,500USD 305.83USD 458,745SEC filing ↗
2023-03-16Jeffery Reuben IIIPurchase (P)Common Stock3,650USD 137.21USD 500,816SEC filing ↗
2022-02-22Palandjian Tracy P.Purchase (P)Common Stock3,700USD 137.67USD 509,379SEC filing ↗
2022-02-15Jeffery Reuben IIIPurchase (P)Common Stock3,500USD 143.96USD 503,860SEC filing ↗
2021-12-03Jamal Rizwan MPurchase (P)Common Stock3,000USD 171.47USD 514,410SEC filing ↗
2021-12-03Erickson John RPurchase (P)Common Stock3,000USD 169.95USD 509,850SEC filing ↗
2021-11-02Jeffery Reuben IIIPurchase (P)Common Stock2,700USD 188.39USD 508,653SEC filing ↗
2021-09-14Horgen Jay C.Purchase (P)Common Stock2,000USD 158.01USD 316,020SEC filing ↗
2021-08-02Churchill Dwight D.Purchase (P)Common Stock1,000USD 160.89USD 160,890SEC filing ↗
2021-05-04Jeffery Reuben IIIPurchase (P)Common Stock2,500USD 160.49USD 401,225SEC filing ↗
2021-02-10Jeffery Reuben IIIPurchase (P)Common Stock2,500USD 145.53USD 363,825SEC filing ↗
2021-02-09Horgen Jay C.Purchase (P)Common Stock4,000USD 136.23USD 544,920SEC filing ↗
2020-09-15Churchill Dwight D.Purchase (P)Common Stock1,000USD 65.25USD 65,250SEC filing ↗
2020-09-09Atkinson Tracy APurchase (P)Common Stock1,469USD 68.46USD 100,568SEC filing ↗

Form 4 evidence

38 transaction lines in the latest 365-day window; 342 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-15Matos Rodriguez Felix V.Option exercise / conversion (M)Common Stock848USD 0.00USD 0SEC filing ↗
2026-08-15STARR LOREN MOption exercise / conversion (M)Common Stock716USD 0.00USD 0SEC filing ↗
2026-08-15Palandjian Tracy P.Option exercise / conversion (M)Common Stock848USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-15Matos Rodriguez Felix V.Option exercise / conversion (M)Common Stock848USD 0.00USD 0SEC filing ↗
2026-08-15STARR LOREN MOption exercise / conversion (M)Common Stock716USD 0.00USD 0SEC filing ↗
2026-08-15Palandjian Tracy P.Option exercise / conversion (M)Common Stock848USD 0.00USD 0SEC filing ↗
2026-08-15Matos Rodriguez Felix V.Option exercise / conversion (M)Common Stock654USD 0.00USD 0SEC filing ↗
2026-08-15FRANQUI ANNETTEOption exercise / conversion (M)Common Stock477USD 0.00USD 0SEC filing ↗
2026-06-12Palandjian Tracy P.Option exercise / conversion (M)Common Stock2,958USD 82.07USD 242,763SEC filing ↗
2026-06-12Palandjian Tracy P.Tax withholding (F)Common Stock685USD 354.62USD 242,915SEC filing ↗
2026-06-08Horgen Jay C.Sale (S)Common Stock17,500USD 338.27USD 5,919,725SEC filing ↗
2026-06-08Horgen Jay C.Option exercise / conversion (M)Common Stock75,000USD 74.49USD 5,586,750SEC filing ↗
2026-06-08Horgen Jay C.Tax withholding (F)Common Stock39,671USD 336.62USD 13,354,052SEC filing ↗
2026-06-01FRANQUI ANNETTEPurchase (P)Common Stock750USD 304.88USD 228,660SEC filing ↗
2026-05-08Matos Rodriguez Felix V.Sale (S)Common Stock1,000USD 300.18USD 300,180SEC filing ↗
2026-05-06Ryan David ChristopherSale (S)Common Stock3,402USD 305.06USD 1,037,814SEC filing ↗
2026-05-06Cates G. StaleyPurchase (P)Common Stock1,500USD 305.83USD 458,745SEC filing ↗
2026-03-09Padiyar KavitaSale (S)Common Stock2,200USD 278.24USD 612,128SEC filing ↗
2026-03-06Wojcik Thomas MSale (S)Common Stock8,000USD 286.30USD 2,290,400SEC filing ↗
2026-03-05Wojcik Thomas MOption exercise / conversion (M)Common Stock7,272USD 0.00USD 0SEC filing ↗
2026-03-05Wojcik Thomas MTax withholding (F)Common Stock9,136USD 299.18USD 2,733,308SEC filing ↗
2026-03-05Wojcik Thomas MAward / grant (A)Common Stock10,619USD 0.00USD 0SEC filing ↗
2026-03-05STARR LOREN MOption exercise / conversion (M)Common Stock652USD 0.00USD 0SEC filing ↗
2026-03-05Ryan David ChristopherOption exercise / conversion (M)Common Stock867USD 0.00USD 0SEC filing ↗
2026-03-05RITCHEA DAVAOption exercise / conversion (M)Common Stock601USD 0.00USD 0SEC filing ↗
2026-03-05RITCHEA DAVATax withholding (F)Common Stock292USD 299.18USD 87,361SEC filing ↗
2026-03-05Palandjian Tracy P.Option exercise / conversion (M)Common Stock867USD 0.00USD 0SEC filing ↗
2026-03-05Padiyar KavitaOption exercise / conversion (M)Common Stock2,288USD 0.00USD 0SEC filing ↗
2026-03-05Padiyar KavitaTax withholding (F)Common Stock2,282USD 299.18USD 682,729SEC filing ↗
2026-03-05Padiyar KavitaAward / grant (A)Common Stock2,426USD 0.00USD 0SEC filing ↗
2026-03-05Matos Rodriguez Felix V.Option exercise / conversion (M)Common Stock867USD 0.00USD 0SEC filing ↗
2026-03-05Horgen Jay C.Option exercise / conversion (M)Common Stock17,563USD 0.00USD 0SEC filing ↗
2026-03-05Horgen Jay C.Tax withholding (F)Common Stock18,333USD 299.18USD 5,484,867SEC 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 · —
TickerAMG
CIK0001004434
SectorFinancial Services
IndustryAsset Management Yahoo Finance
SEC SIC6282 Investment Advice
ExchangeNYSE

Data coverage

Local Form 4 history342 transaction lines from 2020-01-01 to 2026-08-15
30 P purchase lines · 11 S sale lines · 301 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.