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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TLRA
626
DELISTED
Telaria, Inc.
TLRA
| $234K | ﹤0.01% |
31,132
+9,983
| +47% | +$75K |
|
627
Conduent
CNDT
$458M
| $233K | ﹤0.01% |
24,332
-27,203
| -53% | -$260K |
|
628
TD Synnex
SNX
$12.6B
| $233K | ﹤0.01% |
4,738
+500
| +12% | +$24.6K |
|
629
Tradeweb Markets
TW
$25.5B
| $233K | ﹤0.01% |
+5,339
| New | +$233K |
|
630
UBS Group
UBS
$130B
| $233K | ﹤0.01% |
+19,677
| New | +$233K |
|
631
Levi Strauss
LEVI
$8.74B
| $232K | ﹤0.01% |
11,143
+4,856
| +77% | +$101K |
|
|
CISN
632
DELISTED
Cision Ltd. Ordinary Share
CISN
| $231K | ﹤0.01% |
19,728
+14,925
| +311% | +$175K |
|
633
Grand Canyon Education
LOPE
$5.88B
| $229K | ﹤0.01% |
+1,958
| New | +$229K |
|
634
NOV
NOV
$4.94B
| $228K | ﹤0.01% |
+10,268
| New | +$228K |
|
|
MTOR
635
DELISTED
MERITOR, Inc.
MTOR
| $228K | ﹤0.01% |
9,420
-6,950
| -42% | -$168K |
|
636
Supernus Pharmaceuticals
SUPN
$2.62B
| $227K | ﹤0.01% |
+6,866
| New | +$227K |
|
|
CURO
637
DELISTED
CURO Group Holdings Corp.
CURO
| $227K | ﹤0.01% |
20,551
+16,434
| +399% | +$182K |
|
|
FLY
638
DELISTED
Fly Leasing Limited
FLY
| $227K | ﹤0.01% |
13,090
+11,718
| +854% | +$203K |
|
639
Global X Silver Miners ETF NEW
SIL
$3.17B
| $225K | ﹤0.01% |
8,401
+7,639
| +1,002% | +$205K |
|
640
Kirby Corp
KEX
$4.91B
| $224K | ﹤0.01% |
+2,844
| New | +$224K |
|
641
Spectrum Brands
SPB
$1.33B
| $224K | ﹤0.01% |
4,170
-4,863
| -54% | -$261K |
|
642
Antero Midstream
AM
$8.85B
| $223K | ﹤0.01% |
19,514
-13,254
| -40% | -$151K |
|
643
Digital Realty Trust
DLR
$59.6B
| $223K | ﹤0.01% |
1,895
-1,665
| -47% | -$196K |
|
644
Titan Machinery
TITN
$466M
| $223K | ﹤0.01% |
10,859
-10,825
| -50% | -$222K |
|
|
RCM
645
DELISTED
R1 RCM Inc. Common Stock
RCM
| $223K | ﹤0.01% |
17,801
-75
| -0.4% | -$940 |
|
646
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$48.7M
| $220K | ﹤0.01% |
34
-46
| -58% | -$298K |
|
|
CBM
647
DELISTED
Cambrex Corporation
CBM
| $219K | ﹤0.01% |
+4,693
| New | +$219K |
|
|
PEO
648
Adams Natural Resources Fund
PEO
$581M
| $218K | ﹤0.01% |
13,703
+13,568
| +10,050% | +$216K |
|
649
Regency Centers
REG
$13.1B
| $218K | ﹤0.01% |
+3,277
| New | +$218K |
|
650
Invesco S&P 500 Equal Weight ETF
RSP
$75.3B
| $218K | ﹤0.01% |
2,023
-51
| -2% | -$5.5K |
|