RBRK
RUBRIK-A (RBRK)
NYSE
$118.35+$2.95 (+2.56%)
Price as of Oct 02, 2026 3:51 PM EDT
  • $19.3B
    Market Cap
  • 37.48%
    1-Year Change
  • Software - Infrastructure
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
7.14%
14.7M
+1.7M (+11.42%)
Dec 31, 2025
BLACKROCK, INC.
4.85%
10.0M
+1.2M (+11.75%)
Jun 30, 2026
AQR CAPITAL MANAGEMENT LLC
4.83%
9.9M
+7.7M (+77.71%)
Jun 30, 2026
FMR LLC
4.47%
9.2M
+940,730 (+10.22%)
Jun 30, 2026
N/A
4.03%
8.3M
+271,772 (+3.27%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
4.03%
8.3M
+271,772 (+3.27%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
3.35%
6.9M
+330,132 (+4.79%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions709.1M (58.87%)
  • Mutual Funds463.5M (38.47%)
  • Insiders32.0M (2.66%)
  • Other0 (0.00%)

Insider Transactions

  • 2.66% (32.0M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $141,677.21
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $4.1B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Sinha Bipul
Chairman of the Board and CEO
Other
Sep 25, 2026
$0.00
500,000
$0.00
500,000
Sinha Bipul
Chairman of the Board and CEO
Gift
Sep 25, 2026
$0.00
55,000
$0.00
56,652
Sinha Bipul
Chairman of the Board and CEO
Conversion
Sep 24, 2026
$0.00
500,000
$0.00
500,000
Sinha Bipul
Chairman of the Board and CEO
Conversion
Sep 24, 2026
$0.00
55,000
$0.00
111,652
Sinha Bipul
Chairman of the Board and CEO
Conversion
Sep 24, 2026
$0.00
555,000
$0.00
10.7M
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 17, 2026
$20,410.00
200
$102.05
963,878
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 17, 2026
$20,772.00
200
$103.86
963,678
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 17, 2026
$31,794.00
300
$105.98
963,378
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 17, 2026
$293,041.76
2,728
$107.42
960,650
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 17, 2026
$277,904.60
2,572
$108.05
958,078
Nithrakashyap Arvind
Chief Technology Officer
In Kind
Sep 15, 2026
$1.0M
10,436
$100.20
282,857
Choudary Kiran Kumar
Chief Financial Officer
Exempt
Sep 15, 2026
$0.00
4,000
$0.00
11,450
Choudary Kiran Kumar
Chief Financial Officer
Exempt
Sep 15, 2026
$0.00
4,000
$0.00
4,000
Choudary Kiran Kumar
Chief Financial Officer
Conversion
Sep 15, 2026
$0.00
4,000
$0.00
0
Choudary Kiran Kumar
Chief Financial Officer
Conversion
Sep 15, 2026
$0.00
4,000
$0.00
982,073
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 15, 2026
$108,988.00
1,100
$99.08
980,973
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 15, 2026
$58,717.20
586
$100.20
980,387
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 15, 2026
$123,184.58
1,214
$101.47
979,173
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 15, 2026
$71,904.00
700
$102.72
978,473
Choudary Kiran Kumar
Chief Financial Officer
Sell
Sep 15, 2026
$41,392.00
400
$103.48
978,073
Choudary Kiran Kumar
Chief Financial Officer
In Kind
Sep 15, 2026
$1.4M
13,995
$100.20
964,078
Nithrakashyap Arvind
Chief Technology Officer
Conversion
Sep 10, 2026
$0.00
12,820
$0.00
10.0M
Nithrakashyap Arvind
Chief Technology Officer
Conversion
Sep 10, 2026
$0.00
12,820
$0.00
306,113
Nithrakashyap Arvind
Chief Technology Officer
Sell
Sep 10, 2026
$32,305.95
369
$87.55
305,744
Nithrakashyap Arvind
Chief Technology Officer
Sell
Sep 10, 2026
$54,452.32
611
$89.12
305,133
Nithrakashyap Arvind
Chief Technology Officer
Sell
Sep 10, 2026
$434,652.12
4,844
$89.73
300,289
Nithrakashyap Arvind
Chief Technology Officer
Sell
Sep 10, 2026
$424,864.00
4,675
$90.88
295,614
Nithrakashyap Arvind
Chief Technology Officer
Sell
Sep 10, 2026
$212,766.07
2,321
$91.67
293,293
Nithrakashyap Arvind
Chief Technology Officer
Conversion
Sep 09, 2026
$0.00
12,820
$0.00
10.0M
Nithrakashyap Arvind
Chief Technology Officer
Conversion
Sep 09, 2026
$0.00
12,820
$0.00
306,113