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 | |
|---|---|---|---|---|---|---|
601
Scotiabank
BNS
$79.2B
| $234K | 0.01% |
3,900
+690
| +21% | +$41.4K |
|
|
ZAYO
602
DELISTED
Zayo Group Holdings, Inc.
ZAYO
| $234K | 0.01% |
7,595
-18,363
| -71% | -$566K |
|
603
Edison International
EIX
$21.5B
| $233K | 0.01% |
+2,982
| New | +$233K |
|
604
IPG Photonics
IPGP
$3.45B
| $233K | 0.01% |
1,611
-2,823
| -64% | -$408K |
|
605
Red Robin
RRGB
$111M
| $233K | 0.01% |
+3,581
| New | +$233K |
|
606
Ericsson
ERIC
$26.5B
| $231K | 0.01% |
32,287
-525
| -2% | -$3.76K |
|
607
Robert Half
RHI
$3.56B
| $230K | 0.01% |
+4,812
| New | +$230K |
|
|
SBNY
608
DELISTED
Signature Bank
SBNY
| $227K | 0.01% |
1,588
-8
| -0.5% | -$1.14K |
|
609
TD Synnex
SNX
$12.5B
| $227K | 0.01% |
3,798
-262
| -6% | -$15.7K |
|
610
Tyson Foods
TSN
$19.8B
| $225K | 0.01% |
3,594
-47,477
| -93% | -$2.97M |
|
611
Tri Pointe Homes
TPH
$3.1B
| $223K | 0.01% |
16,955
-998
| -6% | -$13.1K |
|
|
KOL
612
DELISTED
VanEck Vectors Coal ETF
KOL
| $223K | 0.01% |
1,691
+1,496
| +767% | +$197K |
|
613
Big 5 Sporting Goods
BGFV
$32.8M
| $218K | 0.01% |
16,766
+5,554
| +50% | +$72.2K |
|
614
Liquidity Services
LQDT
$850M
| $217K | 0.01% |
34,281
+22,025
| +180% | +$139K |
|
615
Dell
DELL
$84.3B
| $214K | 0.01% |
+12,521
| New | +$214K |
|
616
HP
HPQ
$26.7B
| $213K | 0.01% |
12,239
-32,315
| -73% | -$562K |
|
617
MACOM Technology Solutions
MTSI
$9.79B
| $213K | 0.01% |
+3,832
| New | +$213K |
|
618
Brink's
BCO
$4.79B
| $213K | 0.01% |
3,193
+2,044
| +178% | +$136K |
|
|
PDCO
619
DELISTED
Patterson Companies, Inc.
PDCO
| $213K | 0.01% |
+4,545
| New | +$213K |
|
|
NXTM
620
DELISTED
NxStage Medical Inc.
NXTM
| $213K | 0.01% |
8,514
+2,884
| +51% | +$72.2K |
|
|
TEP
621
DELISTED
Tallgrass Energy Partners, LP
TEP
| $213K | 0.01% |
+4,272
| New | +$213K |
|
622
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.8B
| $212K | 0.01% |
6,810
-62,646
| -90% | -$1.95M |
|
|
USCR
623
DELISTED
U S Concrete, Inc.
USCR
| $212K | 0.01% |
+2,707
| New | +$212K |
|
|
SRCL
624
DELISTED
Stericycle Inc
SRCL
| $211K | 0.01% |
2,766
-6,198
| -69% | -$473K |
|
|
BBBY
625
DELISTED
Bed Bath & Beyond Inc
BBBY
| $211K | 0.01% |
+6,973
| New | +$211K |
|