NewMarket Corporation
US ˙ NYSE ˙ US6515871076

SecurityNEU / NewMarket Corporation
InstitutionBessemer Group Inc
Latest Disclosed Ownership60 shares
Latest Disclosed Value $ 39
Bessemer Group Inc reports 3.45% increase in ownership of NEU / NewMarket Corporation

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 60 shares of NewMarket Corporation (US:NEU) valued at $38,457 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 58 shares of NewMarket Corporation. The current value of the position is $47,408 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)
2026-05-06 2026-03-31 13F NEWMARKET CORP COM SC 651587107 60 2 3.45 0 0.0001
2026-02-05 2025-12-31 13F NEWMARKET CORP COM SC 651587107 58 9 18.37 0 0.0001
2025-11-05 2025-09-30 13F NEWMARKET CORP COM SC 651587107 49 0 0.00 0 0.0001
2025-08-01 2025-06-30 13F NEWMARKET CORP COM SC 651587107 49 9 22.50 0 0.0001
2025-04-23 2025-03-31 13F NEWMARKET CORP COM SC 651587107 40 -8 -16.67 0 0.0000
2025-02-13 2024-12-31 13F NEWMARKET CORP COM SC 651587107 48 30 166.67 0 0.0000
2024-11-12 2024-09-30 13F NEWMARKET CORP COM SC 651587107 18 5 38.46 0 0.0000
2024-08-13 2024-06-30 13F NEWMARKET CORP COM SC 651587107 13 0 0.00 0 0.0000
2024-08-13 2024-03-31 13F/A-1 NEWMARKET CORP COM SC 651587107 13 -2 -13.33 0 0.0000
2024-05-13 2024-03-31 13F NEWMARKET CORP COM SC 651587107 13 -2 0 0.0000
2024-02-09 2023-12-31 13F NEWMARKET CORP COM SC 651587107 15 -489 -97.02 0 0.0000
2023-11-13 2023-09-30 13F NEWMARKET CORP COM SC 651587107 504 -3 -0.59 0 0.0005
2023-08-10 2023-06-30 13F NEWMARKET CORP COM SC 651587107 507 495 4,125.00 0 0.0004
2023-05-10 2023-03-31 13F NEWMARKET CORP COM SC 651587107 12 -2 -14.29 0 0.0000
2023-02-13 2022-12-31 13F NEWMARKET CORP COM SC 651587107 14 0 0.00 0 -100.00 0.0000
2022-11-09 2022-09-30 13F NEWMARKET CORP COM SC 651587107 14 0 0.00 4 0.00 0.0000
2022-08-10 2022-06-30 13F NEWMARKET CORP COM SC 651587107 14 0 0.00 4 -20.00 0.0000
2022-05-12 2022-03-31 13F NEWMARKET CORP COM SC 651587107 14 1 7.69 5 25.00 0.0000
2022-01-27 2021-12-31 13F NEWMARKET CORP COM SC 651587107 13 13 4 0.0000
2021-08-06 2021-06-30 13F NEWMARKET CORP COM SC 651587107 0 -68 -100.00 0 -100.00
2021-05-13 2021-03-31 13F NEWMARKET CORP COM SC 651587107 68 -242 -78.06 26 -78.86 0.0001
2021-02-09 2020-12-31 13F NEWMARKET CORP COM SC 651587107 310 -8,645 -96.54 123 -95.99 0.0003
2020-11-12 2020-09-30 13F NEWMARKET CORP COM SC 651587107 8,955 -34,060 -79.18 3,065 -82.21 0.0091
2020-08-05 2020-06-30 13F NEWMARKET CORP COM SC 651587107 43,015 27,865 183.93 17,226 197.00 0.0544
2020-04-30 2020-03-31 13F NEWMARKET CORP COM SC 651587107 15,150 15,150 5,800 0.0234
2019-11-07 2019-09-30 13F NEWMARKET CORP COM SC 651587107 0 -42 -100.00 0 -100.00
2019-07-19 2019-06-30 13F NEWMARKET CORP COM SC 651587107 42 0 0.00 17 -5.56 0.0001
2019-05-13 2019-03-31 13F NEWMARKET CORP COM SC 651587107 42 -22 -34.38 18 -30.77 0.0001
2019-05-21 2018-12-31 13F/A-1 NEWMARKET CORP COM SC 651587107 64 0 0.00 26 0.00 0.0001
2019-02-12 2018-12-31 13F NEWMARKET CORP COM SC 651587107 64 0 26 0.0001
2018-11-06 2018-09-30 13F NEWMARKET CORP COM SC 651587107 64 0 0.00 26 0.00 0.0001
2018-07-25 2018-06-30 13F NEWMARKET CORP COM SC 651587107 64 0 0.00 26 0.00 0.0001
2018-05-10 2018-03-31 13F NEWMARKET CORP COM SC 651587107 64 -166 -72.17 26 -71.74 0.0001
2018-01-30 2017-12-31 13F NEWMARKET CORP COM SC 651587107 230 -22 -8.73 92 -14.81 0.0004
2017-11-03 2017-09-30 13F NEWMARKET CORP COM SC 651587107 252 36 16.67 108 9.09 0.0004
2017-07-27 2017-06-30 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 99 1.02 0.0004
2017-05-12 2017-03-31 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 98 6.52 0.0004
2017-02-07 2016-12-31 13F NEWMARKET CORP COM SC 651587107 216 -20 -8.47 92 -8.91 0.0004
2016-11-10 2016-09-30 13F NEWMARKET CORP COM SC 651587107 236 0 0.00 101 3.06 0.0005
2016-08-11 2016-06-30 13F NEWMARKET CORP COM SC 651587107 236 11 4.89 98 10.11 0.0005
2016-05-11 2016-03-31 13F NEWMARKET CORP COM SC 651587107 225 9 4.17 89 8.54 0.0005
2016-02-12 2015-12-31 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 82 6.49 0.0005
2015-11-16 2015-09-30 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 77 -19.79 0.0004
2015-08-14 2015-06-30 13F NEWMARKET CORP COM SC 651587107 216 216 0.00 96 0.0005
2015-05-14 2015-03-31 13F NEWMARKET CORP COM SC 651587107 0 -216 -100.00 0 -100.00
2015-02-17 2014-12-31 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 87 6.10 0.0005
2014-12-11 2014-09-30 13F/A-1 NEWMARKET CORP COM SC 651587107 216 0 0.00 82 -3.53 0.0005
2014-11-13 2014-09-30 13F NEWMARKET CORP COM SC 651587107 216 0 82 0.0005
2014-08-13 2014-06-30 13F NEWMARKET CORP COM SC 651587107 216 0 0.00 85 1.19 0.0005
2014-05-14 2014-03-31 13F NEWMARKET CORP COM SC 651587107 216 206 2,060.00 84 2,700.00 0.0006
2014-02-18 2013-12-31 13F NEWMARKET CORP COM SC 651587107 10 -10 -50.00 3 -50.00 0.0000
2013-11-08 2013-09-30 13F NEWMARKET CORP COM SC 651587107 20 0 0.00 6 20.00 0.0000
2013-08-14 2013-06-30 13F NEWMARKET CORP COM SC 651587107 20 20 5 0.0000
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.