Position in MDB
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$50,134,754
+$9,776,832 QoQ
Shares Held
149,255
-9.5% QoQ
Ownership
0.186%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
#91
of 867 holders
Holding Since
Jun 2020
22 quarters on record
Voting authority
Sole 80%
Shared 0%
None 20%
Common Shares in MDB Over Time
Shares Held
Position Value (USD)
Position in Software - Infrastructure
Technology · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $1,560,354,849 across 12 Software - Infrastructure names. MDB ranks #8 (3.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MSFT |
Microsoft Corp
|
1,414,294 | $527,559,947 | |
| 2 | PANW |
Palo Alto Networks Inc
|
658,331 | $224,504,037 | |
| 3 | NET |
Cloudflare, Inc.
|
835,502 | $204,931,930 | |
| 4 | IOT |
Samsara Inc.
|
5,836,459 | $189,276,365 | |
| 5 | SNPS |
Synopsys Inc
|
226,856 | $101,193,655 | |
| 6 | RBRK |
Rubrik, Inc.
|
937,308 | $75,247,086 | |
| 7 | CORZ |
Core Scientific, Inc./tx
|
2,409,894 | $61,669,187 | |
| 8 | MDB |
MongoDB, Inc.
This page
|
149,255 | $50,134,754 |
All Filings in MDB
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $50,134,754 | 149,255 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $40,357,922 | 164,881 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $66,952,726 | 159,529 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $56,276,239 | 181,314 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $68,295,677 | 325,233 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $128,706,239 | 733,787 | Shares | Sole | 2025-05-09 | |
| 2024-09-30 | $134,160,646 | 496,248 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $122,160,951 | 488,722 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $79,567,153 | 221,858 | Shares | Sole | 2024-05-10 | |
| 2023-12-31 | $60,255,086 | 147,377 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $49,585,256 | 143,368 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $61,098,184 | 148,661 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $89,485,210 | 383,859 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $115,325,800 | 585,886 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $84,200,162 | 424,054 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $79,684,405 | 307,069 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $122,822,086 | 276,882 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $37,548,383 | 70,933 | Shares | Sole | 2022-02-10 | |
| 2021-03-31 | $31,935,420 | 119,416 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $68,219,395 | 190,005 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $46,371,916 | 200,302 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $35,886,207 | 158,550 | Shares | Sole | 2020-08-13 | |
| No filing history on record for this holder in this stock. | ||||||