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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ICPT
676
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $176K | ﹤0.01% |
+2,659
| New | +$176K |
|
677
Archrock
AROC
$4.35B
| $175K | ﹤0.01% |
17,646
+14,124
| +401% | +$140K |
|
678
Direxion Daily MSCI India Bull 2X Shares
INDL
$68M
| $175K | ﹤0.01% |
2,861
+265
| +10% | +$16.2K |
|
679
3D Systems Corporation
DDD
$272M
| $173K | ﹤0.01% |
21,235
-19,721
| -48% | -$161K |
|
680
Direxion Daily Real Estate Bull 3X Shares
DRN
$64.2M
| $173K | ﹤0.01% |
5,774
-2,085
| -27% | -$62.5K |
|
681
Marcus Corp
MCS
$485M
| $173K | ﹤0.01% |
+4,698
| New | +$173K |
|
682
Alkermes
ALKS
$4.45B
| $172K | ﹤0.01% |
8,852
+4,416
| +100% | +$85.8K |
|
683
World Acceptance Corp
WRLD
$904M
| $172K | ﹤0.01% |
1,354
+1,266
| +1,439% | +$161K |
|
684
Forestar Group
FOR
$1.4B
| $171K | ﹤0.01% |
+9,390
| New | +$171K |
|
685
Portland General Electric
POR
$4.63B
| $171K | ﹤0.01% |
3,046
+2,265
| +290% | +$127K |
|
686
Molson Coors Class B
TAP
$9.7B
| $171K | ﹤0.01% |
2,989
-10,550
| -78% | -$604K |
|
|
BNFT
687
DELISTED
Benefitfocus, Inc.
BNFT
| $171K | ﹤0.01% |
7,183
+6,520
| +983% | +$155K |
|
688
AutoNation
AN
$8.42B
| $170K | ﹤0.01% |
+3,361
| New | +$170K |
|
689
Dycom Industries
DY
$7.51B
| $170K | ﹤0.01% |
+3,340
| New | +$170K |
|
690
Lennar Class A
LEN
$35.4B
| $170K | ﹤0.01% |
3,158
-37,037
| -92% | -$1.99M |
|
|
STML
691
DELISTED
Stemline Therapeutics, Inc.
STML
| $170K | ﹤0.01% |
16,334
+12,896
| +375% | +$134K |
|
692
Angi Inc
ANGI
$769M
| $169K | ﹤0.01% |
2,394
+1,440
| +151% | +$102K |
|
693
Mercury Systems
MRCY
$4.3B
| $169K | ﹤0.01% |
2,090
-7,427
| -78% | -$601K |
|
694
Equity Residential
EQR
$25.2B
| $168K | ﹤0.01% |
1,951
-158
| -7% | -$13.6K |
|
695
Rithm Capital
RITM
$6.63B
| $168K | ﹤0.01% |
+10,756
| New | +$168K |
|
|
CARB
696
DELISTED
Carbonite Inc
CARB
| $168K | ﹤0.01% |
10,858
+8,474
| +355% | +$131K |
|
697
Eldorado Gold
EGO
$5.45B
| $167K | ﹤0.01% |
21,507
-13,616
| -39% | -$106K |
|
698
Host Hotels & Resorts
HST
$12.1B
| $166K | ﹤0.01% |
+9,629
| New | +$166K |
|
699
ProShares UltraShort Bloomberg Natural Gas
KOLD
$183M
| $165K | ﹤0.01% |
562
+47
| +9% | +$13.8K |
|
700
Sun Life Financial
SLF
$33B
| $163K | ﹤0.01% |
3,650
+1,568
| +75% | +$70K |
|