Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Alphabet (Google) Class C
GOOG
|
$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 4 |
Alibaba
BABA
|
$9.66M |
| 5 |
Intel
INTC
|
$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
$36.8M |
| 2 |
Gilead Sciences
GILD
|
$31.2M |
| 3 |
Booking.com
BKNG
|
$29M |
| 4 |
Amazon
AMZN
|
$25.6M |
| 5 |
Baidu
BIDU
|
$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
GAP
226
The Gap, Inc.
GAP
$8.83B
| $423K | 0.05% |
9,776
+5,055
| +107% | +$219K |
|
227
Sangamo Therapeutics
SGMO
$165M
| $422K | 0.05% |
26,946
+22,677
| +531% | +$355K |
|
228
GE Aerospace
GE
$296B
| $420K | 0.05% |
+3,539
| New | +$420K |
|
|
VSTO
229
DELISTED
Vista Outdoor Inc.
VSTO
| $419K | 0.05% |
+9,800
| New | +$419K |
|
230
Enterprise Products Partners
EPD
$68.6B
| $417K | 0.05% |
+12,692
| New | +$417K |
|
231
Five Below
FIVE
$8.46B
| $411K | 0.05% |
11,562
+8,726
| +308% | +$310K |
|
232
Duke Energy
DUK
$93.8B
| $410K | 0.05% |
+5,340
| New | +$410K |
|
233
Coca-Cola
KO
$292B
| $408K | 0.05% |
10,081
-65,949
| -87% | -$2.67M |
|
234
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.49B
| $405K | 0.05% |
+18,356
| New | +$405K |
|
235
Puma Biotechnology
PBYI
$253M
| $402K | 0.05% |
1,704
+595
| +54% | +$140K |
|
236
iShares MSCI South Korea ETF
EWY
$5.22B
| $401K | 0.05% |
7,017
+2,448
| +54% | +$140K |
|
|
APOL
237
DELISTED
Apollo Education Group Inc Class A
APOL
| $401K | 0.05% |
21,221
-8,963
| -30% | -$169K |
|
|
ADT
238
DELISTED
ADT CORP
ADT
| $400K | 0.05% |
9,636
-4,429
| -31% | -$184K |
|
239
Bank of America
BAC
$369B
| $398K | 0.05% |
25,861
+16,361
| +172% | +$252K |
|
240
Copa Holdings
CPA
$4.85B
| $397K | 0.05% |
3,934
-8,691
| -69% | -$877K |
|
241
iShares S&P 500 Growth ETF
IVW
$63.7B
| $397K | 0.05% |
13,940
+1,940
| +16% | +$55.3K |
|
242
Novo Nordisk
NVO
$245B
| $392K | 0.05% |
+14,712
| New | +$392K |
|
243
VanEck Semiconductor ETF
SMH
$27.3B
| $392K | 0.05% |
+14,200
| New | +$392K |
|
244
Citizens Financial Group
CFG
$22.3B
| $390K | 0.05% |
+16,167
| New | +$390K |
|
245
Madison Square Garden
MSGS
$4.71B
| $388K | 0.05% |
+6,438
| New | +$388K |
|
246
Alaska Air
ALK
$7.28B
| $387K | 0.05% |
+5,860
| New | +$387K |
|
|
OA
247
DELISTED
Orbital ATK, Inc.
OA
| $383K | 0.04% |
5,000
+1,642
| +49% | +$126K |
|
|
UFS
248
DELISTED
DOMTAR CORPORATION (New)
UFS
| $383K | 0.04% |
+8,293
| New | +$383K |
|
249
Honeywell
HON
$136B
| $382K | 0.04% |
+3,844
| New | +$382K |
|
250
Synaptics
SYNA
$2.7B
| $380K | 0.04% |
4,679
-1,077
| -19% | -$87.5K |
|