MarketPeel
Insider Trading Intelligence
TC

Timothy C. K. Chou

TDC
DIRECTOR · TERADATA CORP /DE/ · CIK 0001202967
FILING MIX · LIFETIME45%/55%
BUYS
10
SELLS
12
TOTAL VALUE
$1.77M
COMPANIES
2
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
71,711
AVG SELL PX
$41.10
TRADE KIND
SHOWING 22 / 22
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Timothy C. K. Chou, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d11+63.64%-2.11%-0.23%-1.88%-2.06%
14d11+72.73%-5.33%-0.87%-4.46%-3.66%
30d11+90.91%-8.42%-1.40%-7.02%-9.02%
60d11+81.82%-10.71%-0.55%-10.16%-11.84%
90d11+81.82%-11.04%+0.86%-11.90%-9.77%
180d11+54.55%-3.01%+3.74%-6.75%-12.46%
1y11+72.73%+1.62%+7.24%-5.62%-18.09%
2y11(1 pending)+70.00%-7.18%+14.15%-21.33%-23.79%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
TDC · 39,210 shares · as of Jun 8, 2026
011,21722,43433,65044,867202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 10 buys / 12 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
TDC
TERADATA CORP /DE/
SALE10b5-1
10b5-1 plan
5,657$33.72$190.8K39,210Jun 8, 2026Jun 10, 2026View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
8,79044,867May 14, 2026May 18, 2026View →
TDC
TERADATA CORP /DE/
SALE10b5-1
10b5-1 plan
6,216$21.83$135.7K36,077May 22, 2025May 27, 2025View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
11,48942,293May 15, 2025May 19, 2025View →
TDC
TERADATA CORP /DE/
SALE
6,356$33.43$212.5K30,804May 20, 2024May 21, 2024View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
6,92737,160May 14, 2024May 15, 2024View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
6,17630,233May 12, 2023May 12, 2023View →
BLKB
BLACKBAUD INC
PURCHASEGRANT
Stock grant
4,11332,501Aug 1, 2022Aug 3, 2022View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
5,82824,057May 10, 2022May 12, 2022View →
TDC
TERADATA CORP /DE/
SALE
4,092$45.82$187.5K18,229Apr 20, 2022Apr 22, 2022View →
TDC
TERADATA CORP /DE/
SALE
2,265$49.06$111.1K22,321Apr 4, 2022Apr 6, 2022View →
TDC
TERADATA CORP /DE/
SALE
2,729$59.00$161.0K24,586Oct 22, 2021Oct 26, 2021View →
TDC
TERADATA CORP /DE/
SALE
2,728$55.13$150.4K27,315Sep 27, 2021Sep 28, 2021View →
BLKB
BLACKBAUD INC
PURCHASEGRANT
Stock grant
3,16328,388Aug 2, 2021Aug 4, 2021View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
5,65730,043May 4, 2021May 6, 2021View →
TDC
TERADATA CORP /DE/
SALE
2,728$52.00$141.9K24,386Apr 22, 2021Apr 23, 2021View →
TDC
TERADATA CORP /DE/
SALE
4,135$51.00$210.9K27,114Apr 22, 2021Apr 23, 2021View →
TDC
TERADATA CORP /DE/
SALE
1,407$39.73$55.9K31,249Mar 29, 2021Mar 31, 2021View →
BLKB
BLACKBAUD INC
PURCHASEGRANT
Stock grant
4,11925,225Aug 3, 2020Aug 5, 2020View →
TDC
TERADATA CORP /DE/
SALE
2,814$20.60$58.0K32,656Jun 15, 2020Jun 16, 2020View →
TDC
TERADATA CORP /DE/
PURCHASEGRANT
Stock grant
10,91335,470May 5, 2020May 7, 2020View →
BLKB
BLACKBAUD INC
SALE
1,850$81.53$150.8K21,106Feb 13, 2020Feb 14, 2020View →
Other insiders · TDC
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About this filer
CIK 0001202967
ROLE
Director
PRIMARY
TDC
COMPANIES
2
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001202967DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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