Alex Sacerdote Whale Rock Capital Management
Alex Sacerdote is the founder of Whale Rock Capital Management, a technology-focused long/short equity firm. The firm researches software, internet, semiconductors, and other innovation-driven industries with an emphasis on fundamental change. Whale Rock’s holdings often surface in discussions of high-growth technology leadership and cyclical tech opportunity.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Advanced Energy
AEIS
|
+$296M |
| 2 |
MKS Inc
MKSI
|
+$295M |
| 3 |
Lam Research
LRCX
|
+$214M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$179M |
| 5 |
Tower Semiconductor
TSEM
|
+$143M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Semtech
SMTC
|
+$287M |
| 2 |
Ciena
CIEN
|
+$203M |
| 3 |
Mercado Libre
MELI
|
+$198M |
| 4 |
Nu Holdings
NU
|
+$180M |
| 5 |
MongoDB
MDB
|
+$126M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 64.36% |
| 2 | Communication Services | 20.03% |
| 3 | Consumer Discretionary | 8.46% |
| 4 | Industrials | 7.15% |
| 5 | Financials | 0% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
Western Digital
WDC
$166B
| $111M | 1.44% |
+412,006
| New | +$108M |
|
|
27
Ciena
CIEN
$56B
| $89.8M | 1.16% |
231,267
-662,216
| -74% | -$203M |
|
28
Arm
ARM
$260B
| $68.4M | 0.88% |
+452,384
| New | +$54.9M |
|
|
29
MongoDB
MDB
$34.7B
| $55M | 0.71% |
224,648
-375,322
| -63% | -$126M |
|
30
Duolingo
DUOL
$6.84B
| $46.5M | 0.6% |
471,764
-404,882
| -46% | -$49.9M |
|
31
Impinj
PI
$5.06B
| $41.6M | 0.54% |
405,244
-482,028
| -54% | -$64.1M |
|
32
Apple
AAPL
$4.51T
| $24.5M | 0.32% |
+96,613
| New | +$25.1M |
|
33
Microsoft
MSFT
$3.59T
| $19.9M | 0.26% |
+53,850
| New | +$22.5M |
|
34
Advanced Micro Devices
AMD
$773B
| $14.1M | 0.18% |
+69,211
| New | +$14.8M |
|
35
Netflix
NFLX
$331B
| $12.7M | 0.16% |
+131,960
| New | +$11.6M |
|
36
Hewlett Packard
HPE
$70.8B
| – | – |
-1,908,017
| Closed | -$45.8M |
|
37
HubSpot
HUBS
$12B
| – | – |
-149,246
| Closed | -$59.9M |
|
|
38
Mercado Libre
MELI
$97.5B
| – | – |
-98,175
| Closed | -$198M |
|
|
39
Nu Holdings
NU
$70.4B
| – | – |
-10,755,918
| Closed | -$180M |
|
40
Okta
OKTA
$23.5B
| – | – |
-434,854
| Closed | -$37.6M |
|
|
41
Semtech
SMTC
$11.6B
| – | – |
-3,901,469
| Closed | -$287M |
|
|
CHYM
42
Chime Financial
CHYM
$12.4B
| – | – |
-10,572
| Closed | -$266K |
|
|
WLTH
43
Wealthfront Corp
WLTH
$1.38B
| – | – |
-1,600,000
| Closed | -$21.7M |
|
Similar funds
Alex Sacerdote's Q1 2026 Portfolio in Review
As of Q1 2026, Alex Sacerdote held 43 positions worth $7.74B, down 1% from $7.82B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Alex Sacerdote's Q1 2026 filing shows 11 new, 7 increased, 17 reduced and 8 closed positions. Its largest new stake was Advanced Energy: 1,022,112 shares worth $330M. The largest sale was Semtech, an estimated $287M.
By sector, the portfolio is most concentrated in Technology at 64% of assets, up from 59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Alex Sacerdote's largest Q1 2026 buy was Advanced Energy: 1,022,112 shares worth $330M.
- Alex Sacerdote added most to Alphabet (Google) Class A in Q1 2026, an estimated $179M increase.
- Alex Sacerdote's biggest Q1 2026 reduction was Ciena, cutting an estimated $203M.
- Alex Sacerdote fully exited Semtech in Q1 2026, selling an estimated $287M.
- Alex Sacerdote's ten largest holdings make up 51% of its $7.74B portfolio in Q1 2026.
- Alex Sacerdote opened 11 new positions and closed 8 in Q1 2026.
- Alex Sacerdote's portfolio value fell 1% quarter-over-quarter to $7.74B.
Based on Whale Rock Capital Management's 13F filing for Q1 2026, filed 15 May 2026.