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 |
Amazon
AMZN
|
$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$37M |
| 3 |
Amgen
AMGN
|
$32.3M |
| 4 |
Micron Technology
MU
|
$29.4M |
| 5 |
Qualcomm
QCOM
|
$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$29.8M |
| 2 |
Gilead Sciences
GILD
|
$29.3M |
| 3 |
Goldman Sachs
GS
|
$27.7M |
| 4 |
Booking.com
BKNG
|
$26M |
| 5 |
AT&T
T
|
$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
226
eBay
EBAY
$42.3B
| $956K | 0.04% |
+27,404
| New | +$956K |
|
|
ACIA
227
DELISTED
Acacia Communications, Inc. Common Stock
ACIA
| $954K | 0.04% |
23,016
+22,416
| +3,736% | +$929K |
|
228
Howmet Aerospace
HWM
$71.8B
| $950K | 0.04% |
+54,721
| New | +$950K |
|
229
Viavi Solutions
VIAV
$2.6B
| $949K | 0.04% |
90,203
-26,417
| -23% | -$278K |
|
230
NRG Energy
NRG
$28.6B
| $938K | 0.04% |
54,478
-56,678
| -51% | -$976K |
|
|
TCF
231
DELISTED
TCF Financial Corporation
TCF
| $929K | 0.04% |
+58,308
| New | +$929K |
|
232
FibroGen
FGEN
$48.9M
| $928K | 0.04% |
1,149
+157
| +16% | +$127K |
|
233
Alibaba
BABA
$323B
| $924K | 0.04% |
6,561
+6,361
| +3,181% | +$896K |
|
234
Axalta
AXTA
$6.89B
| $922K | 0.04% |
+28,778
| New | +$922K |
|
235
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$46.5M
| $914K | 0.04% |
57
-22
| -28% | -$353K |
|
236
Dollar Tree
DLTR
$20.6B
| $903K | 0.04% |
12,925
-61,745
| -83% | -$4.31M |
|
237
TE Connectivity
TEL
$61.7B
| $902K | 0.04% |
+11,465
| New | +$902K |
|
238
Canadian Solar
CSIQ
$748M
| $897K | 0.04% |
56,390
+56,190
| +28,095% | +$894K |
|
239
Melco Resorts & Entertainment
MLCO
$3.8B
| $897K | 0.04% |
39,970
+11,100
| +38% | +$249K |
|
240
Supernus Pharmaceuticals
SUPN
$2.58B
| $897K | 0.04% |
20,814
-6,633
| -24% | -$286K |
|
|
SINA
241
DELISTED
Sina Corp
SINA
| $887K | 0.04% |
10,445
-7,614
| -42% | -$647K |
|
242
Zions Bancorporation
ZION
$8.34B
| $886K | 0.04% |
+20,200
| New | +$886K |
|
243
Vipshop
VIPS
$8.45B
| $882K | 0.04% |
+83,638
| New | +$882K |
|
|
PE
244
DELISTED
PARSLEY ENERGY INC
PE
| $870K | 0.04% |
31,363
-5,721
| -15% | -$159K |
|
|
REN
245
DELISTED
Resolute Energy Corporaton
REN
| $868K | 0.04% |
29,177
+28,611
| +5,055% | +$851K |
|
246
Fossil Group
FOSL
$165M
| $866K | 0.04% |
83,694
+78,970
| +1,672% | +$817K |
|
247
Electronic Arts
EA
$42.2B
| $865K | 0.04% |
+8,186
| New | +$865K |
|
248
International Flavors & Fragrances
IFF
$16.9B
| $864K | 0.04% |
6,400
-3,547
| -36% | -$479K |
|
249
Trane Technologies
TT
$92.1B
| $862K | 0.04% |
+9,434
| New | +$862K |
|
|
KANG
250
DELISTED
iKang Healthcare Group, Inc.
KANG
| $849K | 0.04% |
69,254
+34,953
| +102% | +$428K |
|