Atlassian Corporation
MX ˙ BMV ˙ US0494681010
SecurityMX:TEAM / Atlassian Corporation
InstitutionXTX Topco Ltd
Latest Disclosed Ownership92,429 shares
Latest Disclosed Value $ 6,308,279
XTX Topco Ltd reports 256.57% increase in ownership of TEAM / Atlassian Corporation

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 92,429 shares of Atlassian Corporation (MX:TEAM) valued at $6,308,279 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 25,922 shares of Atlassian Corporation. This represents a change in shares of 256.57% during the quarter.

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)
2026-05-15 2026-03-31 13F ATLASSIAN CL A 049468101 92,429 66,507 256.57 6,308 50.12 0.1097
2026-02-17 2025-12-31 13F ATLASSIAN CL A 049468101 25,922 22,874 750.46 4,203 764.61 0.1104
2025-11-14 2025-09-30 13F ATLASSIAN CL A 049468101 3,048 -14,013 -82.13 487 -85.97 0.0253
2025-08-12 2025-06-30 13F ATLASSIAN CL A 049468101 17,061 3,040 21.68 3,465 16.44 0.1436
2025-05-08 2025-03-31 13F ATLASSIAN CL A 049468101 14,021 6,805 94.30 2,975 69.42 0.1522
2025-02-13 2024-12-31 13F ATLASSIAN CL A 049468101 7,216 -13,215 -64.68 1,756 -45.87 0.1443
2024-11-14 2024-09-30 13F ATLASSIAN CL A 049468101 20,431 20,431 3,245 0.2346
2024-08-12 2024-06-30 13F ATLASSIAN CL A 049468101 0 -5,314 -100.00 0 -100.00
2024-05-13 2024-03-31 13F ATLASSIAN CL A 049468101 5,314 4,378 467.74 1,037 366.67 0.1398
2024-02-13 2023-12-31 13F ATLASSIAN CL A 049468101 936 936 223 0.0488
2023-11-13 2023-09-30 13F ATLASSIAN CL A 049468101 0 -2,168 -100.00 0 -100.00
2023-08-14 2023-06-30 13F ATLASSIAN CL A 049468101 2,168 2,168 364 0.0652
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.