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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3926
PUT
Aurinia Pharmaceuticals
AUPH
$1.95B
| $341K | ﹤0.01% |
34,000
-144,700
| -81% | -$1.62M |
|
3927
iShares MSCI Europe Financials ETF
EUFN
$4B
| $341K | ﹤0.01% |
21,544
+12,179
| +130% | +$212K |
|
3928
PUT
Tronox
TROX
$967M
| $341K | ﹤0.01% |
20,300
+13,300
| +190% | +$241K |
|
|
HYZN
3929
CALL
DELISTED
Hyzon Motors Inc. Class A Common Stock
HYZN
| $341K | ﹤0.01% |
2,322
-1,952
| -46% | -$414K |
|
|
CEI
3930
CALL
DELISTED
Camber Energy, Inc
CEI
| $341K | ﹤0.01% |
17,208
+244
| +1% | +$8.33K |
|
3931
PUT
Clearway Energy Class C
CWEN
$4.79B
| $340K | ﹤0.01% |
10,000
+3,200
| +47% | +$108K |
|
|
NVO
3932
Novo Nordisk
NVO
$228B
| $340K | ﹤0.01% |
6,106
-31,782
| -84% | -$1.76M |
|
3933
PUT
Aecom
ACM
$9.46B
| $339K | ﹤0.01% |
5,200
+4,700
| +940% | +$329K |
|
3934
PUT
nLIGHT
LASR
$3.33B
| $339K | ﹤0.01% |
33,200
-7,100
| -18% | -$91.7K |
|
3935
CALL
10x Genomics
TXG
$5.88B
| $339K | ﹤0.01% |
7,500
-10,600
| -59% | -$550K |
|
|
IMGN
3936
DELISTED
Immunogen Inc
IMGN
| $339K | ﹤0.01% |
75,376
-40,914
| -35% | -$178K |
|
3937
PUT
Cabot Corp
CBT
$4.72B
| $338K | ﹤0.01% |
+5,300
| New | +$362K |
|
3938
CALL
Fox Factory Holding Corp
FOXF
$794M
| $338K | ﹤0.01% |
4,200
-10,700
| -72% | -$901K |
|
3939
CALL
Thryv Holdings
THRY
$184M
| $338K | ﹤0.01% |
15,100
+1,000
| +7% | +$25.6K |
|
|
SDC
3940
CALL
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
| $338K | ﹤0.01% |
325,600
+69,700
| +27% | +$113K |
|
|
DX
3941
CALL
Dynex Capital
DX
$3.18B
| $337K | ﹤0.01% |
21,200
+5,300
| +33% | +$84.2K |
|
3942
PTC Therapeutics
PTCT
$6.18B
| $337K | ﹤0.01% |
+8,427
| New | +$295K |
|
|
OLK
3943
PUT
DELISTED
Olink Holding AB (publ) American Depositary Shares
OLK
| $337K | ﹤0.01% |
22,200
+22,000
| +11,000% | +$285K |
|
3944
Expeditors International
EXPD
$22.3B
| $336K | ﹤0.01% |
3,455
-91
| -3% | -$9.32K |
|
3945
CALL
Madrigal Pharmaceuticals
MDGL
$12.6B
| $336K | ﹤0.01% |
4,700
+3,500
| +292% | +$257K |
|
3946
ProShares Ultra S&P500
SSO
$7.52B
| $336K | ﹤0.01% |
+14,976
| New | +$401K |
|
3947
PUT
Viper Energy
VNOM
$8.43B
| $336K | ﹤0.01% |
12,600
+5,500
| +77% | +$167K |
|
3948
Kohl's
KSS
$2.16B
| $335K | ﹤0.01% |
9,387
-62,774
| -87% | -$3.08M |
|
3949
Stride
LRN
$4.16B
| $335K | ﹤0.01% |
+8,234
| New | +$305K |
|
3950
Lesaka Technologies
LSAK
$384M
| $335K | ﹤0.01% |
65,318
+65,155
| +39,972% | +$324K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.