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 | |
|---|---|---|---|---|---|---|
|
TWO
5026
PUT
Two Harbors Investment
TWO
$1.27B
| $147K | ﹤0.01% |
7,400
-3,300
| -31% | -$66.8K |
|
|
SBOW
5027
CALL
DELISTED
SilverBow Resources, Inc.
SBOW
| $147K | ﹤0.01% |
5,200
+3,800
| +271% | +$139K |
|
5028
PUT
Arthur J. Gallagher & Co
AJG
$64.1B
| $146K | ﹤0.01% |
900
-7,300
| -89% | -$1.21M |
|
|
OPTU
5029
Optimum Communications Inc
OPTU
$298M
| $146K | ﹤0.01% |
+15,837
| New | +$166K |
|
5030
American Vanguard Corp
AVD
$68.4M
| $146K | ﹤0.01% |
6,537
+64
| +1% | +$1.43K |
|
5031
PUT
Burford Capital
BUR
$903M
| $146K | ﹤0.01% |
14,500
+1,500
| +12% | +$13.2K |
|
5032
Cardiff Oncology
CRDF
$66.5M
| $146K | ﹤0.01% |
66,545
+40,038
| +151% | +$67.1K |
|
|
HLTH
5033
DELISTED
Cue Health Inc. Common Stock
HLTH
| $146K | ﹤0.01% |
+45,818
| New | +$248K |
|
|
ARBK
5034
Argo Blockchain
ARBK
$41.9M
| $145K | ﹤0.01% |
179
+47
| +36% | +$68K |
|
5035
CALL
Capital Southwest
CSWC
$1.47B
| $145K | ﹤0.01% |
7,900
+5,300
| +204% | +$117K |
|
5036
CALL
Casella Waste Systems
CWST
$5.71B
| $145K | ﹤0.01% |
2,000
-21,900
| -92% | -$1.67M |
|
|
GLDD
5037
DELISTED
Great Lakes Dredge & Dock
GLDD
| $145K | ﹤0.01% |
11,084
+7,746
| +232% | +$110K |
|
|
XRN
5038
CALL
Chiron Real Estate Inc
XRN
$514M
| $145K | ﹤0.01% |
2,600
+140
| +6% | +$9.43K |
|
5039
CALL
IDEX
IEX
$17B
| $145K | ﹤0.01% |
800
+400
| +100% | +$75.4K |
|
5040
PUT
OR Royalties Inc
OR
$5.58B
| $145K | ﹤0.01% |
14,400
-3,600
| -20% | -$43.2K |
|
|
PLG
5041
CALL
Platinum Group Metals
PLG
$164M
| $145K | ﹤0.01% |
110,500
+9,700
| +10% | +$16.7K |
|
5042
ProShares UltraShort Bloomberg Crude Oil
SCO
$671M
| $145K | ﹤0.01% |
1,585
-1,410
| -47% | -$133K |
|
|
SNBR
5043
PUT
DELISTED
Sleep Number
SNBR
| $145K | ﹤0.01% |
4,700
-2,000
| -30% | -$84.9K |
|
5044
CALL
Sasol
SSL
$7.5B
| $145K | ﹤0.01% |
6,300
-700
| -10% | -$17.2K |
|
5045
CALL
VOC Energy
VOC
$50.7M
| $145K | ﹤0.01% |
22,400
+2,400
| +12% | +$17.7K |
|
5046
PUT
Ameren
AEE
$30.3B
| $144K | ﹤0.01% |
1,600
-63,300
| -98% | -$5.86M |
|
5047
American Financial Group
AFG
$11.8B
| $144K | ﹤0.01% |
+1,043
| New | +$147K |
|
5048
ARK Space & Defense Innovation ETF
ARKX
$793M
| $144K | ﹤0.01% |
10,790
-2,801
| -21% | -$42.4K |
|
5049
Kulicke & Soffa
KLIC
$4.67B
| $144K | ﹤0.01% |
3,386
-8,599
| -72% | -$426K |
|
|
MVO
5050
DELISTED
MV Oil Trust
MVO
| $144K | ﹤0.01% |
12,867
+12,284
| +2,107% | +$136K |
|
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.