MondegarAI
← Tracker

Institutional

CENTRAL SECURITIES CORP (CET)

CIK 0000018748
$1.21B
Reported AUM
30
Positions
Q1 2026
Period
2026-05-08
Filed

The Brief · CENTRAL SECURITIES CORP (CET) · Q1 2026

AI · grounded in 13F

CENTRAL SECURITIES CORP (CET) established a new position in SUNB valued at $39.05M. The fund also opened a new stake in EFX for $18.01M and increased its holdings in AJG by 28.57%. Conversely, the fund closed its entire position in COHR, resulting in a decrease of $27.69M.

Portfolio · Q1 2026

GOOGL$115.0MADI$111.3MPGR$79.3MSCHW$65.8MCOF$63.9MMSI$60.8MKEYSAMZNCVXMETATDYAXPOther$415.7MC(

Top holdings

QoQ vs Q4 2025

#StockIssuerPriceDay %1Y Gr.5Y Gr.Value% of bookΔ shares (QoQ)Status
1GOOGLALPHABET INC$368.53-0.98%112.92%175.80%$115.0M9.49%20,000−4.8%
2ADIANALOG DEVICES INC$401.39-6.38%83.85%160.94%$111.3M9.19%10,000−2.8%
3PGRPROGRESSIVE CORP$204.024.42%-22.22%139.78%$79.3M6.54%HELD
4SCHWSCHWAB CHARLES CORP$88.840.95%1.95%39.71%$65.8M5.43%100,000−12.5%
5COFCAPITAL ONE FINL CORP$180.67-1.38%-7.47%22.49%$63.9M5.27%+15,000+4.5%
6MSIMOTOROLA SOLUTIONS INC$410.34-0.09%-0.74%93.83%$60.8M5.01%HELD
7KEYSKEYSIGHT TECHNOLOGIES INC$329.83-3.87%103.66%100.44%$56.5M4.66%HELD
8AMZNAMAZON COM INC$246.03-3.06%15.20%47.87%$54.2M4.47%HELD
9CVXCHEVRON CORPORATION$187.31-0.55%39.19%125.88%$53.0M4.38%HELD
10METAMETA PLATFORMS INC$593.00-5.51%-14.74%67.74%$51.5M4.25%HELD
11TDYTELEDYNE TECHNOLOGIES INC$602.27-2.64%20.29%33.02%$42.4M3.50%HELD
12AXPAMERICAN EXPRESS CO$310.66-0.60%3.78%93.56%$42.3M3.50%HELD
13JPMJPMORGAN CHASE & CO$312.370.48%19.84%133.52%$41.2M3.40%HELD
14SUNBSUNBELT RENTALS HOLDINGS INC$79.36-2.37%6.62%3.70%$39.1M3.22%+600,000NEW
15MSFTMICROSOFT CORP$416.67-2.66%-10.71%52.39%$29.6M2.44%HELD
16AJGGALLAGHER ARTHUR J & CO$216.142.44%-33.38%63.48%$29.2M2.41%+30,000+28.6%
17TSMTAIWAN SEMICONDUCTOR MANUFAC$415.17-6.69%104.85%285.24%$27.0M2.23%HELD
18MELIMERCADOLIBRE INC$1607.80-1.65%-35.23%2.49%$26.8M2.21%+2,500+19.2%
19NKENIKE INC$42.98-1.47%-29.22%-72.13%$26.4M2.18%HELD
20RYNRAYONIER INC$20.97-0.24%-0.59%-24.93%$26.0M2.14%HELD
21AONAON PLC$328.531.95%-11.05%30.92%$25.8M2.13%20,000−20.0%
22VVISA INC$323.571.06%-11.91%36.33%$22.7M1.87%HELD
23MDTMEDTRONIC PLC$81.67-0.32%-3.63%-27.91%$21.7M1.79%HELD
24MRKMERCK & CO INC$120.790.44%58.51%82.35%$18.0M1.49%HELD
25EFXEQUIFAX INC$172.130.67%-35.17%-31.38%$18.0M1.49%+100,000NEW
26ROPROPER TECHNOLOGIES INC$332.180.11%-41.57%-30.30%$17.7M1.46%HELD
27JNJJOHNSON & JOHNSON$232.772.02%53.90%55.59%$17.1M1.41%10,000−12.5%
28BRCBRADY CORP$88.63-0.53%28.24%75.69%$16.2M1.34%HELD
29TWFGTWFG INC$19.874.85%-44.03%-30.69%$9.2M0.76%+25,000+5.3%
30WSCWILLSCOT HLDGS CORP$26.21-1.02%-5.71%-7.11%$3.9M0.32%HELD
31COHRCOHERENT CORP$376.99-10.64%150,000EXITED

Source: SEC EDGAR · accession 0001209992-26-000035. 13F discloses long positions only — shorts, foreign equities, and options are excluded.