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 | |
|---|---|---|---|---|---|---|
6826
CALL
Aaon
AAON
$7.3B
| $38K | ﹤0.01% |
1,050
| – | – |
|
6827
PUT
Adecoagro
AGRO
$1.44B
| $38K | ﹤0.01% |
4,500
-1,900
| -30% | -$20.5K |
|
6828
PUT
Associated Banc-Corp
ASB
$5.83B
| $38K | ﹤0.01% |
2,100
+1,700
| +425% | +$34.4K |
|
6829
Bit Digital
BTBT
$463M
| $38K | ﹤0.01% |
29,193
-30,645
| -51% | -$60.7K |
|
|
CLSD
6830
DELISTED
Clearside Biomedical
CLSD
| $38K | ﹤0.01% |
1,764
+1,218
| +223% | +$29.6K |
|
6831
Citius Pharmaceuticals
CTXR
$15.6M
| $38K | ﹤0.01% |
1,694
+1,068
| +171% | +$29.3K |
|
|
FFIC
6832
PUT
DELISTED
Flushing Financial
FFIC
| $38K | ﹤0.01% |
1,800
| – | – |
|
6833
PUT
Hallador Energy
HNRG
$670M
| $38K | ﹤0.01% |
+7,200
| New | +$34.8K |
|
6834
CALL
iBio
IBIO
$69.5M
| $38K | ﹤0.01% |
295
+13
| +5% | +$1.95K |
|
6835
PUT
Ichor Holdings
ICHR
$2.62B
| $38K | ﹤0.01% |
1,500
-5,800
| -79% | -$168K |
|
|
LGO
6836
CALL
Largo
LGO
$59.8M
| $38K | ﹤0.01% |
5,600
-5,400
| -49% | -$49.1K |
|
6837
Limbach Holdings
LMB
$855M
| $38K | ﹤0.01% |
7,230
-5,959
| -45% | -$36.6K |
|
|
ORIO
6838
CALL
Orion Digital Corp
ORIO
$15.4M
| $38K | ﹤0.01% |
14,900
-4,800
| -24% | -$22.8K |
|
6839
NerdWallet
NRDS
$592M
| $38K | ﹤0.01% |
4,822
+2,834
| +143% | +$28.8K |
|
6840
CALL
Navitas Semiconductor
NVTS
$2.84B
| $38K | ﹤0.01% |
9,900
-11,100
| -53% | -$76.7K |
|
6841
CALL
Palomar
PLMR
$3.55B
| $38K | ﹤0.01% |
600
+100
| +20% | +$6.04K |
|
|
RDNW
6842
CALL
RideNow Group
RDNW
$238M
| $38K | ﹤0.01% |
2,600
-6,800
| -72% | -$133K |
|
6843
CALL
Solid Biosciences
SLDB
$794M
| $38K | ﹤0.01% |
4,220
+3,327
| +373% | +$34.6K |
|
6844
Direxion Daily S&P 500 Bear 1X ETF
SPDN
$221M
| $38K | ﹤0.01% |
2,284
+1,448
| +173% | +$23.1K |
|
6845
Taboola.com
TBLA
$1.37B
| $38K | ﹤0.01% |
+15,084
| New | +$55.4K |
|
|
TEF
6846
CALL
DELISTED
Telefonica
TEF
| $38K | ﹤0.01% |
7,600
-46,697
| -86% | -$228K |
|
|
TGB
6847
Trekor Metals
TGB
$2.48B
| $38K | ﹤0.01% |
35,678
+35,133
| +6,446% | +$60K |
|
|
TUYA
6848
Tuya Inc
TUYA
$1.03B
| $38K | ﹤0.01% |
14,794
-1,970
| -12% | -$5.28K |
|
6849
PUT
Walker & Dunlop
WD
$1.71B
| $38K | ﹤0.01% |
400
-100
| -20% | -$11K |
|
6850
CALL
GeneDx Holdings
WGS
$1.93B
| $38K | ﹤0.01% |
936
-334
| -26% | -$22.7K |
|
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.