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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1326
Donaldson
DCI
$9.42B
| $154K | ﹤0.01% |
2,603
-2,625
| -50% | -$155K |
|
1327
Evolus
EOLS
$465M
| $154K | ﹤0.01% |
23,747
+16,489
| +227% | +$107K |
|
1328
Otter Tail
OTTR
$3.48B
| $153K | ﹤0.01% |
+2,145
| New | +$153K |
|
1329
Ouster
OUST
$1.67B
| $153K | ﹤0.01% |
+2,959
| New | +$153K |
|
1330
Rogers Corp
ROG
$1.47B
| $153K | ﹤0.01% |
563
+241
| +75% | +$65.5K |
|
1331
Procure Space ETF
UFO
$115M
| $153K | ﹤0.01% |
5,659
-24,654
| -81% | -$667K |
|
|
INFI
1332
DELISTED
Infinity Pharmaceuticals, Inc.
INFI
| $153K | ﹤0.01% |
68,269
+4,358
| +7% | +$9.77K |
|
1333
Smith Micro Software
SMSI
$14.7M
| $152K | ﹤0.01% |
3,879
-3,696
| -49% | -$145K |
|
1334
Direxion Daily 7-10 Year Treasury Bear 3X Shares
TYO
$9.07M
| $151K | ﹤0.01% |
17,849
+16,165
| +960% | +$137K |
|
|
MYOV
1335
DELISTED
Myovant Sciences Ltd.
MYOV
| $151K | ﹤0.01% |
9,737
-1,435
| -13% | -$22.3K |
|
|
MTOR
1336
DELISTED
MERITOR, Inc.
MTOR
| $151K | ﹤0.01% |
6,128
+1,148
| +23% | +$28.3K |
|
1337
Ambarella
AMBA
$3.43B
| $150K | ﹤0.01% |
+742
| New | +$150K |
|
1338
Alpha Pro Tech
APT
$51.2M
| $149K | ﹤0.01% |
25,116
+20,145
| +405% | +$120K |
|
|
SOHU
1339
Sohu.com
SOHU
$480M
| $149K | ﹤0.01% |
9,183
-7,954
| -46% | -$129K |
|
1340
Unum
UNM
$12.8B
| $149K | ﹤0.01% |
6,105
-1,229
| -17% | -$30K |
|
1341
Hilton Grand Vacations
HGV
$3.98B
| $148K | ﹤0.01% |
2,841
+831
| +41% | +$43.3K |
|
1342
Uranium Energy
UEC
$5.27B
| $148K | ﹤0.01% |
44,471
-25,280
| -36% | -$84.1K |
|
1343
Tenable Holdings
TENB
$3.62B
| $147K | ﹤0.01% |
+2,685
| New | +$147K |
|
1344
WEC Energy
WEC
$35.6B
| $147K | ﹤0.01% |
1,524
-3,053
| -67% | -$294K |
|
|
FST
1345
DELISTED
FAST Acquisition Corp.
FST
| $147K | ﹤0.01% |
14,506
-27,625
| -66% | -$280K |
|
1346
KBR
KBR
$6.36B
| $146K | ﹤0.01% |
+3,068
| New | +$146K |
|
|
SEAC
1347
DELISTED
Seachange International Inc
SEAC
| $146K | ﹤0.01% |
4,584
+2,219
| +94% | +$70.7K |
|
|
CND
1348
DELISTED
Concord Acquisition Corp.
CND
| $146K | ﹤0.01% |
+14,097
| New | +$146K |
|
1349
Transocean
RIG
$3.11B
| $145K | ﹤0.01% |
52,893
-21,548
| -29% | -$59.1K |
|
1350
ProShares UltraPro MidCap400
UMDD
$30.4M
| $145K | ﹤0.01% |
+4,148
| New | +$145K |
|