$TDC

$34.52 -$0.33 (0.95%) Close

$TDC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 93.0M shares outstanding

Who owns TDC?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 72.0%

BlackRock, Inc. 17.6% · Vanguard Portfolio Management LLC 10.6%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

476

+55 vs last qtr

Net shares bought

+13.2M

by institutions in Q2 2026

New / sold out

123 / 68

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +3.8M
Aqr Capital Management LLC +2.4M

Biggest sellers in Q2 2026

Lynrock Lake LP −3.0M
Citadel Advisors LLC −2.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$8.65M

12 notices from 8 people

Shares covered

280.2K

0.30% of the company

Arranged in advance

48%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Stephen Mcmillan Director $2.44M
Petley Richard J Officer 10b5-1 $1.66M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−26.5%

−3.37% a year

Each share's claim on the business

+36.1%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$2.43B vs $974M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years71% 3–5 years3% 1–3 years14% Under 1 year12%

Quarterly turnover

19.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting TDC on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	16.4M	17.63%	+3.8M (+30.6%)	≤2021	0.0%
Shares held by quarter Peak holding16.4M (Q2'26) Change over 8 quarters+6.1M Share of the company17.630% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	9.9M	10.61%	+657.9K (+7.1%)	≤2021	0.0%
Shares held by quarter Peak holding9.9M (Q2'26) Change over 8 quarters+9.9M Share of the company10.610% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

16.4M

% of company

17.63%

Change vs last qtr

+3.8M (+30.6%)

Held since

≤2021

Vanguard Portfolio Management LLC

9.9M

% of company

10.61%

Change vs last qtr

+657.9K (+7.1%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Teradata Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TDC on Form N-PORT; together they hold 59.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$196M	5.7M	6.10%	0.18%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$98.4M	2.8M	3.05%	0.00%	June 30, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$196M

% of company

6.10%

% of the fund

0.18%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$98.4M

% of company

3.05%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Teradata Corporation and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
LL Lynrock Lake Partners LLC 5%+ holder 13D · 6.6%	6.2M	6.68%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company6.680% Disclosed stake13D · 6.6% View the 13D/G filing →
PC Paul Cynthia 5%+ holder 13D · 6.6%	6.2M	6.68%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company6.680% Disclosed stake13D · 6.6% View the 13D/G filing →

Lynrock Lake Partners LLC

5%+ holder13D · 6.6%

6.2M

% of company

6.68%

Change vs last qtr

—

Held since

—

Paul Cynthia

5%+ holder13D · 6.6%

6.2M

% of company

6.68%

Change vs last qtr

—

Held since

—

21 more holders behind a free account

See every insider and 5%+ holder of Teradata Corporation.

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