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 | |
|---|---|---|---|---|---|---|
|
RDS.B
151
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $607K | 0.07% |
+9,690
| New | +$607K |
|
152
Oneok
OKE
$46.6B
| $595K | 0.07% |
+12,338
| New | +$595K |
|
153
Celldex Therapeutics
CLDX
$1.57B
| $593K | 0.07% |
21,289
+10,019
| +89% | +$279K |
|
154
Brown-Forman Class B
BF.B
$13.4B
| $592K | 0.07% |
+6,558
| New | +$592K |
|
|
SDRL
155
DELISTED
Seadrill Limited Common Stock
SDRL
| $591K | 0.07% |
63,287
+11,971
| +23% | +$112K |
|
156
Aptiv
APTV
$17.3B
| $589K | 0.07% |
7,393
+4,334
| +142% | +$345K |
|
|
PLKI
157
DELISTED
Popeyes Louisiana Kitchen, Inc.
PLKI
| $588K | 0.07% |
9,830
+9,621
| +4,603% | +$575K |
|
158
Nike
NKE
$111B
| $585K | 0.07% |
+5,831
| New | +$585K |
|
159
Colgate-Palmolive
CL
$67.3B
| $582K | 0.07% |
8,394
+6,795
| +425% | +$471K |
|
160
Rockwell Automation
ROK
$37.9B
| $580K | 0.07% |
5,001
+3,462
| +225% | +$402K |
|
|
PSXP
161
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $580K | 0.07% |
+8,208
| New | +$580K |
|
162
Bank of New York Mellon
BK
$73.4B
| $576K | 0.07% |
14,326
+384
| +3% | +$15.4K |
|
163
Moody's
MCO
$88.7B
| $576K | 0.07% |
+5,551
| New | +$576K |
|
164
Perrigo
PRGO
$3.23B
| $574K | 0.07% |
+3,468
| New | +$574K |
|
165
Stratasys
SSYS
$870M
| $574K | 0.07% |
10,883
-6,219
| -36% | -$328K |
|
|
MON
166
DELISTED
Monsanto Co
MON
| $574K | 0.07% |
+5,104
| New | +$574K |
|
167
Herc Holdings
HRI
$4.22B
| $573K | 0.07% |
+26,450
| New | +$573K |
|
168
Wheaton Precious Metals
WPM
$46.6B
| $572K | 0.07% |
+30,077
| New | +$572K |
|
169
Invesco CurrencyShares Japanese Yen Trust
FXY
$560M
| $570K | 0.07% |
+7,047
| New | +$570K |
|
170
Canadian Pacific Kansas City
CP
$70.2B
| $566K | 0.07% |
3,098
+1,995
| +181% | +$364K |
|
|
BKS
171
DELISTED
Barnes & Noble
BKS
| $561K | 0.07% |
23,647
+20,459
| +642% | +$485K |
|
172
Range Resources
RRC
$8.15B
| $560K | 0.07% |
10,761
+5,828
| +118% | +$303K |
|
173
Delta Air Lines
DAL
$40.4B
| $557K | 0.06% |
12,407
-56,371
| -82% | -$2.53M |
|
174
Altria Group
MO
$111B
| $557K | 0.06% |
+11,152
| New | +$557K |
|
175
Travel + Leisure Co
TNL
$4.06B
| $557K | 0.06% |
6,162
-2,398
| -28% | -$217K |
|