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 | |
|---|---|---|---|---|---|---|
|
SRNE
3451
DELISTED
Sorrento Therapeutics, Inc.
SRNE
| $497K | ﹤0.01% |
247,557
+168,853
| +215% | +$292K |
|
3452
CALL
NextDecade
NEXT
$1.71B
| $495K | ﹤0.01% |
111,700
+49,000
| +78% | +$304K |
|
|
WSR
3453
CALL
DELISTED
Whitestone REIT
WSR
| $495K | ﹤0.01% |
46,100
+33,500
| +266% | +$403K |
|
|
XXII
3454
22nd Century Group
XXII
$1.33M
| – | – |
0
| – | – |
|
|
GLOP
3455
PUT
DELISTED
GASLOG PARTNERS LP
GLOP
| $495K | ﹤0.01% |
89,300
-4,000
| -4% | -$22K |
|
|
FTCV
3456
CALL
DELISTED
FinTech Acquisition Corp. V Class A Common Stock
FTCV
| $495K | ﹤0.01% |
50,300
+24,300
| +93% | +$239K |
|
3457
PUT
nCino
NCNO
$2.05B
| $494K | ﹤0.01% |
16,000
-58,500
| -79% | -$2.07M |
|
|
SLI
3458
Standard Lithium
SLI
$475M
| $494K | ﹤0.01% |
116,672
+60,324
| +107% | +$357K |
|
|
TBHC
3459
CALL
DELISTED
The Brand House Collective
TBHC
| $493K | ﹤0.01% |
140,300
+113,600
| +425% | +$727K |
|
3460
Gold Fields
GFI
$28.4B
| $492K | ﹤0.01% |
+54,032
| New | +$646K |
|
3461
Independence Realty Trust
IRT
$3.96B
| $492K | ﹤0.01% |
23,735
+19,214
| +425% | +$462K |
|
3462
CALL
TaskUs
TASK
$593M
| $492K | ﹤0.01% |
29,200
+11,300
| +63% | +$288K |
|
3463
PUT
Xylem
XYL
$28.6B
| $492K | ﹤0.01% |
6,300
-3,800
| -38% | -$314K |
|
3464
PUT
Magnite
MGNI
$2.83B
| $491K | ﹤0.01% |
55,400
-9,700
| -15% | -$104K |
|
|
SP
3465
PUT
DELISTED
SP Plus Corporation
SP
| $491K | ﹤0.01% |
16,000
+14,000
| +700% | +$423K |
|
3466
CALL
ITT
ITT
$16.8B
| $490K | ﹤0.01% |
7,300
-3,500
| -32% | -$249K |
|
|
BOXD
3467
CALL
DELISTED
Boxed, Inc.
BOXD
| $490K | ﹤0.01% |
265,000
+231,400
| +689% | +$1.79M |
|
3468
CALL
Iridium Communications
IRDM
$4.7B
| $488K | ﹤0.01% |
13,000
+2,600
| +25% | +$97K |
|
|
GOEV
3469
CALL
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $487K | ﹤0.01% |
573
+13
| +2% | +$22.9K |
|
3470
CALL
Jack Henry & Associates
JKHY
$11.6B
| $486K | ﹤0.01% |
2,700
+2,100
| +350% | +$393K |
|
3471
CALL
KNOT Offshore Partners
KNOP
$353M
| $486K | ﹤0.01% |
29,700
+14,900
| +101% | +$254K |
|
3472
monday.com
MNDY
$3.82B
| $486K | ﹤0.01% |
4,713
+3,254
| +223% | +$395K |
|
|
HBI
3473
PUT
DELISTED
Hanesbrands
HBI
| $485K | ﹤0.01% |
47,200
-15,600
| -25% | -$194K |
|
3474
PUT
Cal-Maine
CALM
$4.48B
| $484K | ﹤0.01% |
9,800
-24,600
| -72% | -$1.25M |
|
|
MOMO
3475
Hello Group
MOMO
$869M
| $482K | ﹤0.01% |
95,473
+32,443
| +51% | +$170K |
|
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.