Knowles Corporation
US ˙ NYSE ˙ US49926D1090

SecurityKN / Knowles Corporation
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership66,507 shares
Latest Disclosed Value $ 1,707,900
Vestmark Advisory Solutions, Inc. reports 80.75% increase in ownership of KN / Knowles Corporation

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 66,507 shares of Knowles Corporation (US:KN) valued at $1,707,900 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 36,796 shares of Knowles Corporation. This represents a change in shares of 80.75% during the quarter. The current value of the position is $2,573,156 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F KNOWLES COM 49926D109 66,507 29,711 80.75 1,708 116.62 0.0117
2026-02-06 2025-12-31 13F KNOWLES COM 49926D109 36,796 -3,377 -8.41 789 -15.81 0.0106
2025-11-10 2025-09-30 13F KNOWLES COM 49926D109 40,173 -23,233 -36.64 936 -16.20 0.0178
2025-08-06 2025-06-30 13F KNOWLES COM 49926D109 63,406 45,681 257.72 1,117 315.24 0.0161
2025-05-13 2025-03-31 13F KNOWLES COM 49926D109 17,725 6,013 51.34 269 15.45 0.0069
2025-02-06 2024-12-31 13F KNOWLES COM 49926D109 11,712 11,712 233 0.0080
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.