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 | |
|---|---|---|---|---|---|---|
7851
Cadre Holdings
CDRE
$1.31B
| $15K | ﹤0.01% |
+764
| New | +$18K |
|
7852
PUT
California Resources
CRC
$4.49B
| $15K | ﹤0.01% |
400
-500
| -56% | -$21.4K |
|
7853
CALL
Castle Biosciences
CSTL
$742M
| $15K | ﹤0.01% |
700
-2,600
| -79% | -$60.4K |
|
7854
PUT
Culp Inc
CULP
$45.2M
| $15K | ﹤0.01% |
3,500
+300
| +9% | +$1.84K |
|
7855
PUT
Donegal Group Class A
DGICA
$715M
| $15K | ﹤0.01% |
900
+200
| +29% | +$3K |
|
7856
PUT
DLH Holdings
DLHC
$78.3M
| $15K | ﹤0.01% |
1,000
-300
| -23% | -$4.89K |
|
|
CHRN
7857
PUT
ChronoScale Holdings
CHRN
$2.69B
| $15K | ﹤0.01% |
607
+580
| +2,148% | +$18.4K |
|
7858
PUT
e.l.f. Beauty
ELF
$4.77B
| $15K | ﹤0.01% |
500
| – | – |
|
|
EMX
7859
PUT
DELISTED
EMX Royalty
EMX
| $15K | ﹤0.01% |
8,300
-700
| -8% | -$1.4K |
|
7860
CALL
Gulfport Energy Corp
GPOR
$2.82B
| $15K | ﹤0.01% |
+200
| New | +$18.6K |
|
7861
US Global Investors
GROW
$36.3M
| $15K | ﹤0.01% |
3,458
-14,558
| -81% | -$70.8K |
|
7862
State Street SPDR S&P China ETF
GXC
$456M
| $15K | ﹤0.01% |
166
+114
| +219% | +$9.72K |
|
7863
PUT
Fusion Fuel Green
HTOO
$8.5M
| $15K | ﹤0.01% |
69
+18
| +35% | +$5.03K |
|
7864
PUT
INmune Bio
INMB
$44.9M
| $15K | ﹤0.01% |
1,700
-13,900
| -89% | -$103K |
|
7865
Amplify BlueStar Israel Technology ETF
ITEQ
$109M
| $15K | ﹤0.01% |
342
+300
| +714% | +$14.7K |
|
7866
iShares US Energy ETF
IYE
$1.72B
| $15K | ﹤0.01% |
402
-4,962
| -93% | -$211K |
|
7867
PUT
Kopin
KOPN
$586M
| $15K | ﹤0.01% |
13,500
-10,800
| -44% | -$16.2K |
|
|
LGHL
7868
CALL
Lion Group Holding
LGHL
$997K
| – | – |
0
| – | – |
|
7869
PUT
Moelis & Co
MC
$4.85B
| $15K | ﹤0.01% |
400
-900
| -69% | -$39.3K |
|
7870
Mistras Group
MG
$477M
| $15K | ﹤0.01% |
2,593
-18,545
| -88% | -$110K |
|
7871
CALL
Milestone Scientific
MLSS
$33.3M
| $15K | ﹤0.01% |
16,600
+9,100
| +121% | +$9.28K |
|
7872
Magnachip Semiconductor
MX
$110M
| $15K | ﹤0.01% |
+1,057
| New | +$18.2K |
|
7873
CALL
NBT Bancorp
NBTB
$2.82B
| $15K | ﹤0.01% |
400
+300
| +300% | +$10.9K |
|
7874
CALL
NanoViricides
NNVC
$39.3M
| $15K | ﹤0.01% |
8,200
+1,600
| +24% | +$2.94K |
|
7875
PUT
NextCure
NXTC
$20.4M
| $15K | ﹤0.01% |
+267
| New | +$13.9K |
|
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.