Who owns TTDKY stock?

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View all 10 holding institutions

Across its top 10 institutional holders, TTDKY's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 14/100, avg. turnover score 21/100).

Notable Holders

TTDKY ranks #10072 out of 37701 tracked stocks by institutional interest, inside the more closely watched half of our coverage.

10 institutions disclose a position in TTDKY, but none treat it as a major bet — even Boston Common Asset Management, LLC, its most concentrated holder, allocates just 0.3% of its own portfolio to it.

Price Chart

TTDKY Quarterly 13F Institutional Trade Shifts

Recent Activity

+$477.1K

Total Buy Value

$10.6K

Total Sell Value

New buy2

Trim1

Add4

Sold out1

Net Buyers

Net Sellers

Top Movers

TTDKY

Q2 2026

Top 5 Institutional Movers

Boston Common Asset Management

+$2.0M

Add

Rhumbline Advisers

+$565.4K

Add

Henry James International Management

+$242.0K

New buy

GAMMA Investing

+$152.0K

Add

Atlas Capital Advisors

+$27.7K

New buy

Data by AlphaSMO • Not financial advice.

* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.

Smart Money Convergence

TTDKY does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Recent TTDKY Insider Buying & Selling Activity (Form 4)

Congress Trading (STOCK Act)

Action	Member	Trade Date	Amount
Buy	Alan Armstrong Senate	2026-03-30	$1K–$15K

View all congress trades →

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

872351408

FAQ

Who are the top institutional investors holding TDK CORP-SPONSORED ADR (TTDKY)?

Major stakeholders currently include Boston Common Asset Management, LLC ($4.7M), Rhumbline Advisers ($1.3M), GAMMA Investing LLC ($304.7K). Based on the latest 13F filings, there are a total of 10 tracked investment funds and institutions maintaining positions in TTDKY.

What is the overall institutional sentiment toward TTDKY recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $500.6K, driven by 6 managers accumulating shares while 2 reduced their exposure.

Which institutions have been selling or reducing their TTDKY positions?

In the latest period, 1 funds trimmed their holdings, and 1 managers completely exited their positions. The aggregate reported sell value was $10.6K.

Are there any notable investors adding TTDKY to their portfolios?

Yes, buying activity remains notable. 2 institutions opened new positions in {ticker}, and 4 existing holders added to their shares. The total reported buy value for the quarter amounted to $477.1K.

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Developer Access

Access TTDKY's institutional ownership data programmatically:

REST API

curl https://alphasmo.com/api/v1/market/stock/TTDKY

CLI

npx alphasmo stocks get TTDKY

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