Position in RBRK
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$19,572,819
-$73,492,174 QoQ
Shares Held
399,690
-67.2% QoQ
Ownership
0.194%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2024
8 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in RBRK Over Time
Shares Held
Position Value (USD)
Derivatives in RBRK
reported options exposure · as of Mar 31, 2026CallValue
$3,178,153
CallShares
64,900
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Software - Infrastructure
Technology · as of Mar 31, 2026MILLENNIUM MANAGEMENT LLC holds $3,391,847,638 across 99 Software - Infrastructure names. RBRK ranks #33 (0.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MSFT |
Microsoft Corp
|
2,798,177 | $1,035,801,180 | |
| 2 | WIX |
Wix.com Ltd.
|
2,850,787 | $256,770,385 | |
| 3 | ORCL |
Oracle Corp
|
1,078,543 | $158,664,460 | |
| 4 | TOST |
Toast, Inc.
|
4,736,296 | $125,559,206 | |
| 5 | OKTA |
Okta, Inc.
|
1,410,954 | $111,056,189 | |
| 6 | AKAM |
Akamai Technologies Inc
|
870,261 | $99,949,475 | |
| 7 | MDB |
MongoDB, Inc.
|
399,310 | $97,739,108 | |
| 8 | S |
SentinelOne, Inc.
|
7,407,328 | $95,406,384 |
All Filings in RBRK
Export CSV
16 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,178,153 | 64,900 | Call | Sole | 2026-05-15 | |
| 2026-03-31 | $19,572,819 | 399,690 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $6,638,464 | 86,800 | Call | Sole | 2026-02-17 | |
| 2025-12-31 | $93,064,993 | 1,216,854 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $2,913,888 | 38,100 | Put | Sole | 2026-02-17 | |
| 2025-09-30 | $9,458,750 | 115,000 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $2,154,950 | 26,200 | Put | Sole | 2025-11-14 | |
| 2025-09-30 | $72,510,695 | 881,589 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $80,944,296 | 903,497 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $1,219,600 | 20,000 | Call | Sole | 2025-05-15 | |
| 2025-03-31 | $67,597,610 | 1,108,521 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $653,600 | 10,000 | Put | Sole | 2025-02-14 | |
| 2024-12-31 | $71,130,634 | 1,088,290 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $3,215,000 | 100,000 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $7,621,479 | 237,060 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $6,272,392 | 204,579 | Shares | Sole | 2024-08-14 | |
| No filing history on record for this holder in this stock. | ||||||