TGT NYSE Security breach

Target

Target confirmed unauthorized access to payment-card data from US stores during the peak holiday shopping period.

1 month vs SPY -6.8 pp Below SPY

-5.2% TGT vs +1.6% SPY

DisclosureDec 19, 2013 · time unknown
Company’s roleDirect victim
Available data12 months complete
Share typeCommon stock · TGT

This site shows how share prices moved after an incident became public. It does not prove that the incident caused the move. Company news, sector moves and the wider market can affect every result. Educational only — not investment advice.

Disclosure timing

When could the market react?

The baseline is the last adjusted close before the news was public. The reaction session is the first close afterward.

  1. 01Baseline sessionDec 18, 2013

    Normalized to 100 for both TGT and SPY.

  2. 02Public disclosureDec 19, 2013 · time unknown

    Publication time is not documented; lower timing precision.

  3. 03First reaction closeDec 19, 2013

    -2.2% company total return versus -0.1% for SPY; -2.1 pp market-relative return.

Disclosure time is unknown; the previous session close is used as baseline.

Time windows

Company vs SPY

Each row uses the last trading session on or before its target date. “Market-relative” is the company return minus the SPY return, in percentage points.

Returns measured from the shared baseline session
WindowEndpointTGTSPYMarket-relativeSignal
First reaction Dec 19, 2013 -2.2% -0.1% -2.1 pp Below SPY
+7 days Dec 26, 2013 -1.7% +1.7% -3.4 pp Below SPY
+1 month Jan 17, 2014 -5.2% +1.6% -6.8 pp Below SPY
+3 months Mar 19, 2014 -5.7% +3.3% -9.0 pp Below SPY
+6 months Jun 19, 2014 -6.2% +9.2% -15.4 pp Below SPY
+12 months Dec 19, 2014 +20.1% +16.5% +3.6 pp Above SPY
Compare with current catalog aggregates
WindowThis caseCatalog medianCatalog meann
First reaction-2.1 pp-0.8 pp-1.5 pp30
+7 days-3.4 pp-2.0 pp-4.0 pp30
+1 month-6.8 pp-6.6 pp-6.8 pp30
+3 months-9.0 pp-5.1 pp-6.6 pp30
+6 months-15.4 pp-5.6 pp-7.5 pp30
+12 months+3.6 pp-3.7 pp-10.1 pp30

Normalized total return

TGT compared with SPY

Baseline session = 100. Adjusted close reflects splits and reinvested distributions.

Target had +20.1% company total return versus +16.5% for SPY; +3.6 pp market-relative return. The chart shows normalized adjusted-close performance for up to 24 months.

View tabular chart fallback
Representative normalized chart points, sampled approximately monthly
DateTGTSPY
Dec 18, 2013100.0100.0
Jan 21, 201493.2101.9
Feb 20, 201489.8101.9
Mar 21, 201494.3103.5
Apr 22, 201495.6104.4
May 21, 201491.4105.1
Jun 20, 201493.1109.4
Jul 22, 201494.8110.7
Aug 20, 201497.2111.1
Sep 19, 2014102.8112.6
Oct 20, 201497.2106.8
Nov 18, 2014109.6115.3
Dec 18, 2014121.2116.0
Jan 21, 2015120.1114.6
Feb 20, 2015125.7119.2
Mar 23, 2015132.8119.0
Apr 22, 2015133.0119.4
May 21, 2015130.7121.0
Jun 22, 2015138.6120.7
Jul 22, 2015136.3120.4
Aug 20, 2015133.7116.1
Sep 21, 2015129.7112.5
Oct 20, 2015123.3116.3
Nov 18, 2015116.6119.5
Dec 18, 2015119.2115.2

Price recovery

Recovered

Here, recovery only means that adjusted close reached the baseline again. It does not mean every effect of the incident ended.

State
Recovered
Initial trough
-2.9% on Dec 24, 2013
Recovery close
Sep 11, 2014
Calendar days
266
Observation cap
24 months after disclosure

Hypothetical $1,000

What would $1,000 have looked like?

Compare $1,000 in TGT with $1,000 in SPY, bought and measured on the same dates.

TGT value $958 Target
SPY value $1,083 US market benchmark
Difference vs SPY -$125 Observed result

Entry Dec 23, 2013 Exit Jun 23, 2014

Uses fractional shares and adjusted close. Leaves out taxes, fees and slippage. The holding period starts on the purchase date. This is a historical illustration, not an investment strategy.

Case note

Target confirmed that attackers had obtained payment-card data used in its US stores. The incident covered transactions made during the holiday season and led the company to notify customers, work with law enforcement and offer protective services.

This observation measures Target from the previous trading session because the source documents the day, but not a sufficiently precise release time. Later settlement and operating effects are context, not evidence that every subsequent price move was caused by the breach.

Evidence

Sources and case review

We qualify each case before checking its price results. These links support the disclosure date, listing, incident and business impact.

  1. primary Dec 19, 2013
    Target confirms unauthorized access to payment card data in U.S. stores Target Corporation Supports: Disclosure, Impact, Description
  2. primary Mar 14, 2014
    Target 2013 Form 10-K Target Corporation / U.S. SEC Supports: Listing, Impact
  3. Listing evidenceChecked Jul 20, 2026
    Target confirms unauthorized access to payment card data Target Corporation The issuer announcement and event-period filings identify Target and its NYSE-listed common stock.

Why it is included. Target was the direct victim, the issuer announcement fixes the public-disclosure date, and the payment-card exposure and subsequent response provide a clear consumer-impact signal. Reviewed Jul 20, 2026.