WESTFIELD CAPITAL MANAGEMENT CO LP
Position in PKG — Packaging Corp Of America
CIK 1177719
BOSTON, MA
Position in PKG
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$84,897,019
+$20,430,738 QoQ
Shares Held
356,291
+17.3% QoQ
Ownership
0.400%
of shares outstanding
% of Portfolio
0.28%
of 13F equity value
Holder Rank
#38
of 891 holders
Holding Since
Jun 2022
5 quarters on record
Voting authority
Sole 91%
Shared 0%
None 9%
Common Shares in PKG Over Time
Shares Held
Position Value (USD)
Position in Packaging & Containers
Consumer Cyclical · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $86,798,335 across 2 Packaging & Containers names. PKG ranks #1 (97.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PKG |
Packaging Corp Of America
This page
|
356,291 | $84,897,019 | |
| 2 | PACK |
Ranpak Holdings Corp.
|
260,098 | $1,901,316 |
All Filings in PKG
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5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $84,897,019 | 356,291 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $64,466,281 | 303,771 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $58,757,814 | 284,914 | Shares | Sole | 2026-02-11 | |
| 2022-09-30 | $3,848,852 | 34,276 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $4,814,837 | 35,017 | Shares | Sole | 2022-08-12 | |
| No filing history on record for this holder in this stock. | ||||||