Position in RBRK
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$35,807,695
-$8,235,071 QoQ
Shares Held
731,217
+27.0% QoQ
Ownership
0.355%
of shares outstanding
% of Portfolio
0.03%
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
$24,979,597
CallShares
510,100
PutValue
$7,747,054
PutShares
158,200
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, 2026CITADEL ADVISORS LLC holds $5,522,800,258 across 118 Software - Infrastructure names. RBRK ranks #30 (0.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MSFT |
Microsoft Corp
|
2,638,124 | $976,554,360 | |
| 2 | NET |
Cloudflare, Inc.
|
1,941,142 | $400,535,239 | |
| 3 | XYZ |
Block, Inc.
|
6,287,222 | $378,365,019 | |
| 4 | ORCL |
Oracle Corp
|
2,302,838 | $338,770,498 | |
| 5 | PLTR |
Palantir Technologies Inc.
|
2,015,600 | $294,841,967 | |
| 6 | PANW |
Palo Alto Networks Inc
|
1,823,683 | $292,372,858 | |
| 7 | OKTA |
Okta, Inc.
|
3,401,709 | $267,748,514 | |
| 8 | TWLO |
Twilio Inc
|
1,930,352 | $242,876,887 |
All Filings in RBRK
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $35,807,695 | 731,217 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $7,747,054 | 158,200 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $24,979,597 | 510,100 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $17,032,096 | 222,700 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $146,550,976 | 1,916,200 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $44,042,766 | 575,873 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $220,365,762 | 2,679,219 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $49,794,150 | 605,400 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $48,223,175 | 586,300 | Put | Defined | 2025-11-14 | |
| 2025-06-30 | $34,545,904 | 385,600 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $40,745,532 | 454,800 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $150,054,917 | 1,674,907 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $10,104,386 | 165,700 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $13,702,206 | 224,700 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $63,005,694 | 1,033,219 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $46,247,036 | 707,574 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $9,882,432 | 151,200 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $8,568,696 | 131,100 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $1,012,725 | 31,500 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $12,848,521 | 399,643 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $10,561,275 | 328,500 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $23,575,945 | 768,948 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $1,149,750 | 37,500 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $1,949,976 | 63,600 | Call | Defined | 2024-08-14 | |
| No filing history on record for this holder in this stock. | ||||||