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 |
Apple
AAPL
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
Amplify Transformational Data Sharing ETF
BLOK
$1.24B
| $407K | ﹤0.01% |
22,488
-34,569
| -61% | -$626K |
|
|
CTXS
627
DELISTED
Citrix Systems Inc
CTXS
| $406K | ﹤0.01% |
+4,183
| New | +$406K |
|
628
New Oriental
EDU
$9.04B
| $405K | ﹤0.01% |
19,912
-2,427
| -11% | -$49.4K |
|
|
BZUN
629
Baozun
BZUN
$230M
| $404K | ﹤0.01% |
36,947
+36,539
| +8,956% | +$400K |
|
630
Trinseo
TSE
$81.6M
| $403K | ﹤0.01% |
10,499
+1,320
| +14% | +$50.7K |
|
631
BWX Technologies
BWXT
$15.2B
| $394K | ﹤0.01% |
7,161
-543
| -7% | -$29.9K |
|
632
BridgeBio Pharma
BBIO
$10.1B
| $392K | ﹤0.01% |
+43,235
| New | +$392K |
|
633
GitLab
GTLB
$8.17B
| $390K | ﹤0.01% |
7,352
+997
| +16% | +$52.9K |
|
634
Southwest Airlines
LUV
$16.3B
| $389K | ﹤0.01% |
10,780
-111,949
| -91% | -$4.04M |
|
635
Madrigal Pharmaceuticals
MDGL
$9.59B
| $387K | ﹤0.01% |
5,407
-5,014
| -48% | -$359K |
|
|
PDS
636
Precision Drilling
PDS
$759M
| $386K | ﹤0.01% |
6,044
+438
| +8% | +$28K |
|
637
Technology Select Sector SPDR Fund
XLK
$86.3B
| $386K | ﹤0.01% |
3,040
-1,750
| -37% | -$222K |
|
638
ProShares UltraShort Yen
YCS
$30.7M
| $386K | ﹤0.01% |
+13,520
| New | +$386K |
|
|
ETWO
639
DELISTED
E2open Parent Holdings
ETWO
| $384K | ﹤0.01% |
49,416
-41,883
| -46% | -$325K |
|
640
Skechers
SKX
$9.5B
| $384K | ﹤0.01% |
10,795
-28,061
| -72% | -$998K |
|
641
Invesco DB Commodity Index Tracking Fund
DBC
$1.28B
| $381K | ﹤0.01% |
+14,331
| New | +$381K |
|
642
Xylem
XYL
$33.5B
| $379K | ﹤0.01% |
4,848
+2,877
| +146% | +$225K |
|
643
NXP Semiconductors
NXPI
$55.3B
| $378K | ﹤0.01% |
+2,557
| New | +$378K |
|
644
Rekor Systems
REKR
$140M
| $378K | ﹤0.01% |
215,271
+210,017
| +3,997% | +$369K |
|
|
TEN
645
Tsakos Energy Navigation Ltd.
TEN
$648M
| $377K | ﹤0.01% |
42,083
-22,170
| -35% | -$199K |
|
646
BellRing Brands
BRBR
$4.63B
| $376K | ﹤0.01% |
+15,124
| New | +$376K |
|
647
iShares 0-5 Year TIPS Bond ETF
STIP
$12.7B
| $376K | ﹤0.01% |
+3,709
| New | +$376K |
|
|
MITT
648
AG Mortgage Investment Trust
MITT
$245M
| $375K | ﹤0.01% |
55,619
-23,343
| -30% | -$157K |
|
649
Cassava Sciences
SAVA
$101M
| $373K | ﹤0.01% |
13,276
+7,235
| +120% | +$203K |
|
650
Suburban Propane Partners
SPH
$1.2B
| $372K | ﹤0.01% |
24,409
-11,158
| -31% | -$170K |
|