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 | |
|---|---|---|---|---|---|---|
|
TRTN
751
DELISTED
Triton International Limited
TRTN
| $272K | ﹤0.01% |
5,175
-43,507
| -89% | -$2.29M |
|
752
Magnite
MGNI
$3.4B
| $271K | ﹤0.01% |
30,590
-27,180
| -47% | -$241K |
|
753
Sweetgreen
SG
$1.03B
| $271K | ﹤0.01% |
23,271
+9,609
| +70% | +$112K |
|
|
NTUS
754
DELISTED
Natus Medical Inc
NTUS
| $270K | ﹤0.01% |
+8,259
| New | +$270K |
|
755
ProShares Ultra QQQ
QLD
$9.15B
| $268K | ﹤0.01% |
+6,477
| New | +$268K |
|
756
iShares US Regional Banks ETF
IAT
$650M
| $267K | ﹤0.01% |
5,428
+5,364
| +8,381% | +$264K |
|
757
Sun Communities
SUI
$16.1B
| $267K | ﹤0.01% |
+1,680
| New | +$267K |
|
758
Hyliion Holdings
HYLN
$288M
| $264K | ﹤0.01% |
82,065
+27,471
| +50% | +$88.4K |
|
759
Tecnoglass
TGLS
$3.36B
| $264K | ﹤0.01% |
15,076
-10,961
| -42% | -$192K |
|
|
RFP
760
DELISTED
Resolute Forest Products Inc.
RFP
| $264K | ﹤0.01% |
20,745
-44,450
| -68% | -$566K |
|
|
MNDT
761
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $264K | ﹤0.01% |
12,117
-25,186
| -68% | -$549K |
|
762
AbCellera Biologics
ABCL
$1.28B
| $263K | ﹤0.01% |
24,782
-26,174
| -51% | -$278K |
|
763
American Axle
AXL
$704M
| $263K | ﹤0.01% |
34,997
-31,395
| -47% | -$236K |
|
764
United States Gasoline Fund
UGA
$78M
| $263K | ﹤0.01% |
3,879
+1,952
| +101% | +$132K |
|
765
Chegg
CHGG
$179M
| $262K | ﹤0.01% |
13,957
-2,578
| -16% | -$48.4K |
|
766
Cerence
CRNC
$403M
| $262K | ﹤0.01% |
+10,385
| New | +$262K |
|
767
ProShares Ultra Energy
DIG
$72.4M
| $261K | ﹤0.01% |
8,805
+3,981
| +83% | +$118K |
|
768
Molson Coors Class B
TAP
$9.7B
| $261K | ﹤0.01% |
4,800
-13,667
| -74% | -$743K |
|
|
WIRE
769
DELISTED
Encore Wire Corp
WIRE
| $261K | ﹤0.01% |
2,512
-23,639
| -90% | -$2.46M |
|
770
Liberty Broadband Class A
LBRDA
$8.61B
| $260K | ﹤0.01% |
2,295
+2,253
| +5,364% | +$255K |
|
771
Imperial Oil
IMO
$46.6B
| $259K | ﹤0.01% |
5,512
-3,367
| -38% | -$158K |
|
|
TRVG
772
trivago
TRVG
$230M
| $259K | ﹤0.01% |
34,895
+6,800
| +24% | +$50.5K |
|
773
Shake Shack
SHAK
$3.92B
| $257K | ﹤0.01% |
6,525
-2,762
| -30% | -$109K |
|
774
Spruce Power Holding Corp
SPRU
$28.7M
| $257K | ﹤0.01% |
27,999
+8,071
| +41% | +$74.1K |
|
775
Public Storage
PSA
$50.7B
| $256K | ﹤0.01% |
819
-1,629
| -67% | -$509K |
|