Arkolith/Funds/Alpine Associates Management Inc.

Alpine Associates Management Inc.

CIK 1396835
Holdings as of Mar 31, 2026·disclosed Apr 21, 2026·~21-day 13F lag·13F-HR
Inactive

Alpine Associates Management Inc. holds a diversified book of 70 stocks worth $1.7B as of Q1 2026 (disclosed Apr 21, 2026, a ~45-day 13F lag). This quarter they opened UNIFIRST CORP MASS and trimmed NORFOLK SOUTHERN CORP. Their largest long position is NORFOLK SOUTHERN CORP at 8% of the equity book.

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Use Arkolith to show ALPINE ASSOCIATES MANAGEMENT INC.'s latest
holdings, largest changes, and filing provenance.
Opened
40
new positions
Added to
21
existing
Trimmed
8
reduced
Sold out
36
exited

Concentration

Top-heavy: diversified book

Top 5 holdings
26%
Top 10 holdings
40%
Top 20 holdings
61%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

23% mapped to company sectors

ETF / fund or unclassified
77%
Industrials
8%
Health Care
6%
Materials
3%
Utilities
2%
Real Estate
2%
Communication Services
1%
Financials
1%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
  • UNIFIRST CORP MASS
    New$54.6M
  • VALARIS LTD
    New$46.3M
  • SILICON LABORATORIES INC
    New$46.3M
  • ARCELLX INC
    New$43.4M
  • New$43.3M
  • APELLIS PHARMACEUTICALS INC
    New$34.8M
Trimmed / exited
  • −0.8%$1.1M
  • CHART INDS INC
    −0.5%$451K
  • SHUTTERSTOCK INC
    −1.3%$249K
  • HOLOGIC INC
    −0.7%$237K
  • −0.5%$110K
  • AMERICAN WOODMARK CORP
    −0.5%$41K

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

70 positions
#SecurityValueShares% PortLast moveHistory
1Norfolk Southn Corp
COM
$133.3M464.5K
7.9%
−0.8%
Reduced · −4K sh
2Air Lease Corp
CL A
$89.8M1.38M
5.3%
+24%
Added · +264K sh
3Chart Inds Inc
COM
$88.6M428.8K
5.2%
−0.5%
Reduced · −2K sh
4Electronic Arts Inc
COM
$65.4M320.8K
3.9%
+18%
Added · +49K sh
5Qorvo Inc
COM
$62.0M801.6K
3.7%
+93%
Added · +387K sh
6Unifirst Corp Mass
COM
$54.6M217.1K
3.2%
New
New position
7Kenvue Inc
COM
$51.2M2.97M
3.0%
+38%
Added · +810K sh
8Valaris Ltd
CL A
$46.3M472.5K
2.7%
New
New position
9Silicon Laboratories Inc
COM
$46.3M222.4K
2.7%
New
New position
10Arcellx Inc
COMMON STOCK
$43.4M378.0K
2.6%
New
New position
11Penumbra Inc
COM
$43.3M131.9K
2.6%
New
New position
12Warner Bros Discovery Inc
COM SER A
$43.0M1.56M
2.5%
+175%
Added · +995K sh
13Apellis Pharmaceuticals Inc
COM
$34.8M864.0K
2.0%
New
New position
14Centessa Pharmaceuticals PLC
SPONSORED ADS
$34.4M865.5K
2.0%
New
New position
15Skywater Technology Inc
COM
$33.7M1.23M
2.0%
New
New position
16Masimo Corp
COM
$33.6M189.0K
2.0%
New
New position
17Hologic Inc
COM
$32.7M432.2K
1.9%
−0.7%
Reduced · −3K sh
18CSG Sys Intl Inc
COM
$32.2M402.5K
1.9%
+747%
Added · +355K sh
19Zim Integrated Shipping Serv
SHS
$31.1M1.18M
1.8%
New
New position
20Janus Henderson Group PLC
ORD SHS
$30.3M590.6K
1.8%
+127%
Added · +331K sh
21TXNM Energy Inc
COM
$29.9M512.1K
1.8%
+1.0%
Added · +5K sh
22Clearwater Analytics Hldgs I
CL A
$29.9M1.27M
1.8%
+229%
Added · +880K sh
23Webster Finl Corp
COM
$28.9M416.5K
1.7%
New
New position
24Brighthouse Finl Inc
COM
$27.2M453.9K
1.6%
+22%
Added · +81K sh
25Aes Corp
COM
$26.6M1.89M
1.6%
New
New position
26Sealed Air Corp New
COM
$26.3M624.9K
1.5%
+46%
Added · +198K sh
27Allied Gold Corp
COM NEW
$25.9M837.3K
1.5%
New
New position
28Thermon Group Hldgs Inc
COM
$24.5M485.9K
1.4%
New
New position
29Liberty Broadband Corp
COM SER C
$23.7M472.2K
1.4%
−0.5%
Reduced · −2K sh
30Proassurance Corp
COM
$23.4M945.6K
1.4%
+13%
Added · +110K sh
31Amicus Therapeutic
COM
$23.1M1.60M
1.4%
+68%
Added · +647K sh
32Cantaloupe Inc
COM
$22.5M2.08M
1.3%
+8.8%
Added · +168K sh
33Digitalbridge Group Inc
CL A NEW
$22.4M1.45M
1.3%
+282%
Added · +1.1M sh
34Onestream Inc
CL A
$22.1M920.7K
1.3%
New
New position
35NCR Atleos Corporation
COM SHS
$20.7M474.8K
1.2%
New
New position
36Day One Biopharmaceuticals I
COM
$19.8M925.0K
1.2%
New
New position
37Sunopta Inc
COM
$19.2M2.97M
1.1%
New
New position
38Select Med Hldgs Corp
COM
$19.2M1.18M
1.1%
New
New position
39Shutterstock Inc
COM
$18.9M1.14M
1.1%
−1.3%
Reduced · −15K sh
40Semrush Hldgs Inc
CL A COM
$18.9M1.58M
1.1%
+80%
Added · +704K sh
41Sun Ctry Airls Hldgs Inc
COM
$18.7M1.13M
1.1%
New
New position
42National Storage Affiliates
COM SHS BEN IN
$18.0M475.9K
1.1%
New
New position
43Veris Residential Inc
COM
$14.1M748.5K
0.8%
New
New position
44Silicon Motion Technology Co
SPONSORED ADR
$13.1M116.9K
0.8%
+46%
Added · +37K sh
45Sunococorp LLC
COM SHS LLC
$11.5M186.7K
0.7%
+225%
Added · +129K sh
46Talkspace Inc
COM
$9.6M1.85M
0.6%
New
New position
47International Money Express
COM
$9.5M601.0K
0.6%
+54%
Added · +211K sh
48American Woodmark Corp
COM
$9.0M225.8K
0.5%
−0.5%
Reduced · −1K sh
49Coeur MNG Inc
COM NEW
$7.6M407.5K
0.5%
New
New position
50Two Harbors Inventment Corpo
COM
$7.6M664.3K
0.4%
+40%
Added · +190K sh
Showing 50 of 70 positions

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q1 2026Mar 31, 2026Apr 21, 202670$1.7B13F-HR
Q4 2025Dec 31, 2025Feb 5, 202667$1.5B13F-HR
Q3 2025Sep 30, 2025Nov 6, 202567$1.7B13F-HR
Q2 2025Jun 30, 2025Aug 5, 202550$1.9B13F-HR
Q1 2025Mar 31, 2025May 8, 202545$1.9B13F-HR
Q4 2024Dec 31, 2024Feb 7, 202543$1.6B13F-HR
Q3 2024Sep 30, 2024Nov 8, 202449$2.2B13F-HR
Q2 2024Jun 30, 2024Aug 9, 202443$2.1B13F-HR
Q1 2024Mar 31, 2024May 9, 202440$2.6B13F-HR
Q4 2023Dec 31, 2023Feb 12, 202437$2.0B13F-HR/A
Q3 2023Sep 30, 2023Nov 8, 202335$1.9B13F-HR
Q2 2023Jun 30, 2023Aug 10, 202338$2.2B13F-HR
Q1 2023Mar 31, 2023May 10, 202338$1.9B13F-HR
Q4 2022Dec 31, 2022Feb 8, 202341$2.2B13F-HR
Q3 2022Sep 30, 2022Nov 10, 202248$2.4B13F-HR
Q2 2022Jun 30, 2022Aug 9, 202251$2.7B13F-HR
Q1 2022Mar 31, 2022May 11, 202251$2.3B13F-HR
Q4 2021Dec 31, 2021Feb 8, 202249$2.7B13F-HR
Q3 2021Sep 30, 2021Nov 10, 202154$3.1B13F-HR
Q2 2021Jun 30, 2021Aug 11, 202151$3.6B13F-HR
Q1 2021Mar 31, 2021May 11, 202152$3.7B13F-HR
Q4 2020Dec 31, 2020Feb 10, 202145$2.4B13F-HR
Q3 2020Sep 30, 2020Nov 10, 202029$1.9B13F-HR
Amended / restated
  • Q4 2023 · filed Feb 7, 202413F-HR · superseded

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.