Keysight Technologies, Inc.

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 1,119 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• Fiscal periods used: Keysight's fiscal year ends in late October. The latest 10-K on file is for fiscal year 2025 (period ended 31 Oct 2025, filed 17 Dec 2025). The latest 10-Q on file as of 18 Aug 2026 is for the fiscal Q2 2026 quarter (period ended 30 Apr 2026, filed 4 Jun 2026); the Q3 FY2026 10-Q (period ending 31 Jul 2026) had not yet been filed as of the research date, consistent with Keysight's normal ~29-day filing lag and stockanalysis.com listing 18 Aug 2026 itself as Keysight's next earnings date. company.shares_outstanding (170,895,368) is taken from this Q2 FY2026 10-Q cover page, 'The number of shares of common stock outstanding at May 29, 2026'. The 5%-holder proxy table used is the 2026 DEF 14A (filed 26 Jan 2026, for the annual meeting), the most recent one on file, with a 20 Jan 2026 record date.
• Holdings side: searched both the FY2025 10-K and the Q2 FY2026 10-Q for 'equity method', 'unconsolidated', 'joint venture', 'non-marketable', 'noncontrolling interest'/'non-controlling interest', 'strategic investment', 'investments in', 'minority interest', 'redeemable', 'measurement alternative', and for any named investee. Result: holdings is an empty array, and this is a sourced finding, not a gap. Keysight carries a 'Long-term investments' balance sheet line ($211 million at 31 Oct 2025, $169 million at 30 Apr 2026), the bulk of which (fair value $169 million at FY2025-end, $120 million at Q2 FY2026-end, Level 1 in the fair value hierarchy, i.e. quoted market prices) is explicitly described in the 10-K/10-Q as 'equity investments, including securities that are earmarked to pay the deferred compensation liability'. This is investment-portfolio funding for an employee deferred-compensation plan, not a strategic equity stake in an operating company, and is excluded from holdings on the same treasury/pension-portfolio basis the brief flags (per the Teradyne precedent of excluding a $162.3 million treasury portfolio). The FY2025 10-K also separately disclosed $42 million of Level 3 'Investments - other', identified in the filing as 'the U.K. insurance buy-in contract' funding a pension obligation, also excluded on the same basis; this line was not separately broken out in the Q2 FY2026 10-Q. No named private-company or public minority equity stake, and no equity-method investee, was found anywhere in either filing. No SC 13D or SC 13G has ever been filed on Keysight naming Keysight as an investor in a target (checked via EDGAR full text search across SC 13D/SC 13G for the term 'Keysight' as a filer, which returned nothing beyond Keysight's own status as a 5%+ holder subject in others' filings, none found).
• Consolidated-but-not-wholly-owned check: Keysight's FY2025 10-K equity statement shows a 'Non-controlling Interests' column that was already $0 as of 31 Oct 2022 and stayed effectively nil through FY2025; the filing separately discloses that in FY2024 Keysight paid $458 million to acquire the non-controlling interest in ESI Group (a French simulation-software company Keysight had previously only partly owned), fully buying out that minority. As of the Q2 FY2026 10-Q, Keysight has no subsidiary with a genuine third-party minority interest (no Nucor/Moody's ICRA-style holding here), and ESI Group is now a wholly owned, and correctly excluded, operating subsidiary.
• Former parent check (Agilent Technologies): Keysight was spun off from Agilent Technologies, Inc. via a pro-rata stock distribution completed 1 Nov 2014 (Agilent did not retain a stake at spin-off; this was a distribution to Agilent's own shareholders, not a partial IPO or carve-out that left Agilent holding shares). Checked in both directions per the brief. (1) Every SC 13D and SC 13G/A filed on Keysight (CIK 0001601046) since 2014 was enumerated via EDGAR submissions and full text search: all are ordinary institutional 13G filers (Vanguard, BlackRock, T. Rowe Price, Wellington, various index/active managers); none are Agilent. A full text search of every SC 13D/13G filed on Keysight for the word 'Agilent' returned exactly one hit, a 2017 SC 13D relating to Keysight's own tender offer for Ixia, which mentions Agilent only in unrelated background text, not as a reporting owner of Keysight shares. (2) The 2026 proxy's 5%-holder table lists exactly three holders: Vanguard (12%), T. Rowe Price Associates (9.4%), BlackRock (9.1%); Agilent does not appear. (3) Checking Agilent's own CIK (0001090872) filing history for 'SC 13' filings returns a long run of Schedule 13G/A filings, but inspection of the actual filing text (e.g. accession 0000932478-24-000867) shows these are filings BY other institutional holders (e.g. Vanguard) ON Agilent's own stock (CUSIP 00846U101, issuer named as 'Agilent Technologies Inc'), i.e. Agilent is the SUBJECT company in that data feed, not the filer, and none of them concern Keysight. Conclusion: Agilent never retained a stake in Keysight after the 2014 spin-off and holds nothing today. This is a sourced finding with no register row, per the brief's instruction that a fully exited or never-held former parent is a notes finding, not a register row.
• Register: 11 institutional/13F rows sourced from fresh Q2 2026 13F-HR filings (period ended 30 Jun 2026, filed 7 to 14 Aug 2026), used in preference to the 2026 proxy's 5%-holder table, which cites Schedule 13G/A filings from February 2024 (Vanguard) and February 2025 (T. Rowe Price, BlackRock); the stale proxy figures are recorded in each affected row's method_note per the brief. Vanguard's parent CIK 0000102909 filed Form 13F-NT for Q2 2026 (confirmed directly against its EDGAR submissions feed), so its row sums four successor entities named and cited in method_note (four further Vanguard entities checked and confirmed to hold 0 KEYS shares this quarter). T. Rowe Price is a roll-up of both CIKs named in the brief (Associates and the separate Investment Management registrant), both of which needed the thousands-to-dollars rescaling, verified against a consistent ~$350.07/share implied price across independent filers as of 30 Jun 2026. Capital Group is a roll-up of all three named CIKs, only one of which (Capital World Investors) holds KEYS this quarter. Plus 3 insider rows sourced from the 2026 proxy (Chairman/former CEO Nersesian, CEO Dhanasekaran, and the 20-person officer/director aggregate), 14 register rows total.
• Self-gate, computed with the chart's own formula on this final file: 14 register rows. Members rolling into the 'All directors and executive officers as a group (20 persons)' aggregate (Nersesian 191,770 plus Dhanasekaran 46,092 = 237,862) counted at full value on their own rows; the aggregate itself counted at its residual of 692,573 minus 237,862 = 454,711. Every other row (11 institutional rows) counted at full value. Row total: 77,524,710 shares against 170,895,368 shares outstanding = 45.36%. This sits just above the brief's typical 25 to 45 per cent band but well below the 55 per cent rework threshold; the concentration is driven by Vanguard, BlackRock and T. Rowe Price alone totalling roughly 30.7 per cent, which is plausible for a mid-cap, no-founder, single-class stock with no large insider block. No mixed instrument, pre-split figure, or double-counted holder was found on review.
• Keysight has a single class of common stock, one vote per share, no dual-class structure and no founder/family control block; total insider (director and executive officer) ownership is 0.4 per cent of shares outstanding per the proxy, so there is no insider-control story comparable to a founder-led company.
• No stock split was found: 'stock split', 'two-for-one' and 'forward split' all returned zero hits in the Q2 FY2026 10-Q. No convertible notes are outstanding: the only 'convertible' hit in the 10-Q concerns convertible notes Keysight might hold as an investment asset, not debt or dilutive instruments Keysight itself has issued, and none were added to shares_outstanding.
• Market cap ($57.85 billion) and the implied share price (~$338.50, derived from market cap divided by shares outstanding) are sourced from stockanalysis.com as of 18 Aug 2026, which happens to be Keysight's own next scheduled earnings date per that same page; intraday price was volatile that day (day's range $332.71 to $350.90 per the same source), so share_price_usd should be read as an approximate, derived figure rather than a precise quote.