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 | |
|---|---|---|---|---|---|---|
1501
ManpowerGroup
MAN
$1.78B
| $109K | ﹤0.01% |
1,122
-2,956
| -72% | -$287K |
|
1502
Ryerson Holding
RYI
$723M
| $109K | ﹤0.01% |
4,213
+3,751
| +812% | +$97K |
|
|
SNT
1503
Senstar Technologies
SNT
$105M
| $109K | ﹤0.01% |
37,528
+37,525
| +1,250,833% | +$109K |
|
|
AMYT
1504
DELISTED
Amryt Pharma plc American Depositary Shares
AMYT
| $109K | ﹤0.01% |
+10,093
| New | +$109K |
|
1505
LXP Industrial Trust
LXP
$2.72B
| $108K | ﹤0.01% |
6,927
-921
| -12% | -$14.4K |
|
1506
VF Corp
VFC
$5.8B
| $108K | ﹤0.01% |
1,482
-8,685
| -85% | -$633K |
|
|
QVCGA
1507
QVC Group, Inc. Series A Common Stock
QVCGA
$92M
| $108K | ﹤0.01% |
+285
| New | +$108K |
|
1508
Denny's
DENN
$264M
| $107K | ﹤0.01% |
6,712
-16,422
| -71% | -$262K |
|
1509
Comfort Systems
FIX
$26.6B
| $107K | ﹤0.01% |
1,083
+860
| +386% | +$85K |
|
1510
Golar LNG
GLNG
$4.16B
| $107K | ﹤0.01% |
8,709
-4,410
| -34% | -$54.2K |
|
1511
QuinStreet
QNST
$930M
| $107K | ﹤0.01% |
5,933
+312
| +6% | +$5.63K |
|
|
NEX
1512
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $107K | ﹤0.01% |
30,417
-622,843
| -95% | -$2.19M |
|
|
TA
1513
DELISTED
TravelCenters of America LLC
TA
| $107K | ﹤0.01% |
2,088
+1,527
| +272% | +$78.3K |
|
1514
Antero Midstream
AM
$8.91B
| $106K | ﹤0.01% |
10,993
+10,672
| +3,325% | +$103K |
|
1515
Amplify Lithium & Battery Technology ETF
BATT
$70.9M
| $106K | ﹤0.01% |
5,933
+4,644
| +360% | +$83K |
|
1516
The Mosaic Company
MOS
$10.7B
| $106K | ﹤0.01% |
2,704
-161,639
| -98% | -$6.34M |
|
1517
ProShares VIX Short-Term Futures ETF
VIXY
$80.7M
| $106K | ﹤0.01% |
+350
| New | +$106K |
|
1518
SPDR S&P Semiconductor ETF
XSD
$1.48B
| $106K | ﹤0.01% |
437
-2,199
| -83% | -$533K |
|
|
FUV
1519
DELISTED
Arcimoto, Inc. Common Stock
FUV
| $106K | ﹤0.01% |
683
-195
| -22% | -$30.3K |
|
1520
Invesco DB Oil Fund
DBO
$228M
| $105K | ﹤0.01% |
7,754
-23,715
| -75% | -$321K |
|
1521
iShares MBS ETF
MBB
$41.5B
| $105K | ﹤0.01% |
+981
| New | +$105K |
|
|
ONIT
1522
Onity Group Inc.
ONIT
$367M
| $105K | ﹤0.01% |
2,648
+1,563
| +144% | +$62K |
|
|
SQSP
1523
DELISTED
Squarespace, Inc.
SQSP
| $105K | ﹤0.01% |
3,564
+2,973
| +503% | +$87.6K |
|
1524
Castor Maritime
CTRM
$19.2M
| $104K | ﹤0.01% |
+7,387
| New | +$104K |
|
|
MILE
1525
DELISTED
Metromile, Inc. Common Stock
MILE
| $104K | ﹤0.01% |
+47,831
| New | +$104K |
|