NewMarket Corporation
US ˙ NYSE ˙ US6515871076

SecurityNEU / NewMarket Corporation
InstitutionCalvert Variable Products, Inc. - Calvert VP S&P MidCap 400 Index Portfolio - I Class
Latest Disclosed Ownership1,466 shares
Latest Disclosed Value $ 1,012,800
Calvert Variable Products, Inc. - Calvert VP S&P MidCap 400 Index Portfolio - I Class reports 2.20% decrease in ownership of NEU / NewMarket Corporation

On August 25, 2025 - Calvert Variable Products, Inc. - Calvert VP S&P MidCap 400 Index Portfolio - I Class filed a NPORT-P form disclosing ownership of 1,466 shares of NewMarket Corporation (US:NEU) valued at $1,012,801 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 1,499 shares of NewMarket Corporation. This represents a change in shares of -2.20% during the quarter. The current value of the position is $1,164,884 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)
2025-08-25 2025-06-30 NP NewMarket EC US6515871076 1,466 -33 -2.20 1,013 19.20 0.1715
2025-05-28 2025-03-31 NP NewMarket EC US6515871076 1,499 -38 -2.47 849 4.56 0.1518
2025-02-19 2024-12-31 NP NewMarket EC US6515871076 1,537 -38 -2.41 812 -6.56 0.1337
2024-11-27 2024-09-30 NP NewMarket EC US6515871076 1,575 106 7.22 869 14.80 0.1409
2024-08-20 2024-06-30 NP NewMarket EC US6515871076 1,469 -58 -3.80 757 -21.88 0.1282
2024-05-28 2024-03-31 NP NewMarket EC US6515871076 1,527 -22 -1.42 969 14.67 0.1556
2024-02-02 2023-12-31 NP NewMarket EC US6515871076 1,549 0 0.00 845 20.03 0.1463
2023-11-29 2023-09-30 NP NewMarket EC US6515871076 1,549 -110 -6.63 705 5.55 0.1348
2023-08-22 2023-06-30 NP NewMarket EC US6515871076 1,659 -45 -2.64 667 7.41 0.1141
2023-05-26 2023-03-31 NP NewMarket EC US6515871076 1,704 -65 -3.67 622 12.91 0.1104
2023-03-01 2022-12-31 NP NewMarket EC US6515871076 1,769 0 0.00 550 3.38 0.0993
2022-11-28 2022-09-30 NP NewMarket EC US6515871076 1,769 -78 -4.22 532 -4.14 0.1050
2022-08-22 2022-06-30 NP NewMarket EC US6515871076 1,847 0 0.00 556 -7.35 0.1042
2022-05-27 2022-03-31 NP NewMarket EC US6515871076 1,847 0 0.00 599 -5.37 0.0942
2022-02-28 2021-12-31 NP NewMarket EC US6515871076 1,847 -64 -3.35 633 -2.16 0.0928
2021-11-24 2021-09-30 NP NewMarket EC US6515871076 1,911 -111 -5.49 647 -0.61 0.1015
2021-08-19 2021-06-30 NP NewMarket EC US6515871076 2,022 0 0.00 651 -15.23 0.0993
2021-05-28 2021-03-31 NP NewMarket EC US6515871076 2,022 0 0.00 769 -4.60 0.1196
2021-02-16 2020-12-31 NP NewMarket EC US6515871076 2,022 -65 -3.11 805 12.75 0.1377
2020-11-25 2020-09-30 NP NewMarket EC US6515871076 2,087 0 0.00 714 -14.49 0.1476
2020-08-24 2020-06-30 NP NewMarket EC US6515871076 2,087 0 0.00 836 4.51 0.1767
2020-05-29 2020-03-31 NP NewMarket EC US6515871076 2,087 0 0.00 799 -21.28 0.2179
2020-02-24 2019-12-31 NP NewMarket EC 651587107 2,087 0 0.00 1,015 3.05 0.1911
2019-11-27 2019-09-30 NP NewMarket EC US6515871076 2,087 2,087 985 0.1955
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.