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 | |
|---|---|---|---|---|---|---|
8276
The Joint Corp
JYNT
$121M
| $10K | ﹤0.01% |
698
-1,277
| -65% | -$28.5K |
|
8277
Korn Ferry
KFY
$4.35B
| $10K | ﹤0.01% |
184
-168
| -48% | -$10.2K |
|
8278
CALL
Kilroy Realty
KRC
$4.64B
| $10K | ﹤0.01% |
200
-15,700
| -99% | -$996K |
|
8279
Luxfer Holdings
LXFR
$456M
| $10K | ﹤0.01% |
+700
| New | +$11.3K |
|
8280
CALL
Masco
MAS
$14.5B
| $10K | ﹤0.01% |
200
-19,200
| -99% | -$1.02M |
|
8281
PUT
MGP Ingredients
MGPI
$435M
| $10K | ﹤0.01% |
100
| – | – |
|
8282
CALL
Mueller Industries
MLI
$14.5B
| $10K | ﹤0.01% |
800
-19,600
| -96% | -$266K |
|
8283
PUT
MINISO
MNSO
$3.9B
| $10K | ﹤0.01% |
1,300
-500
| -28% | -$3.41K |
|
|
MRC
8284
CALL
DELISTED
MRC Global
MRC
| $10K | ﹤0.01% |
1,100
-8,900
| -89% | -$98.8K |
|
|
MRIN
8285
PUT
DELISTED
Marin Software
MRIN
| $10K | ﹤0.01% |
1,050
-8,033
| -88% | -$103K |
|
|
MVO
8286
PUT
DELISTED
MV Oil Trust
MVO
| $10K | ﹤0.01% |
900
+700
| +350% | +$7.76K |
|
8287
PUT
Myriad Genetics
MYGN
$485M
| $10K | ﹤0.01% |
600
-300
| -33% | -$6.23K |
|
8288
NN Inc
NNBR
$251M
| $10K | ﹤0.01% |
+4,006
| New | +$11.1K |
|
8289
Insperity
NSP
$2.11B
| $10K | ﹤0.01% |
+104
| New | +$10.3K |
|
8290
CALL
Ocean Power Technologies
OPTT
$41.9M
| $10K | ﹤0.01% |
18,300
-21,800
| -54% | -$21.1K |
|
8291
CALL
Organogenesis Holdings
ORGO
$319M
| $10K | ﹤0.01% |
2,200
-9,100
| -81% | -$56K |
|
8292
CALL
Ovid Therapeutics
OVID
$427M
| $10K | ﹤0.01% |
4,800
+1,700
| +55% | +$4.11K |
|
8293
CALL
Phreesia
PHR
$678M
| $10K | ﹤0.01% |
400
+300
| +300% | +$6.61K |
|
8294
Quad
QUAD
$500M
| $10K | ﹤0.01% |
+3,680
| New | +$17.8K |
|
|
RDHL
8295
Redhill Biopharma
RDHL
$4.26M
| $10K | ﹤0.01% |
12
+3
| +33% | +$4.12K |
|
|
REE
8296
DELISTED
REE Automotive
REE
| $10K | ﹤0.01% |
291
-148
| -34% | -$7.57K |
|
8297
CALL
Resources Connection
RGP
$137M
| $10K | ﹤0.01% |
500
-100
| -17% | -$1.79K |
|
|
RTB
8298
CALL
RTB Digital
RTB
$255M
| $10K | ﹤0.01% |
29
-2
| -6% | -$1.93K |
|
8299
Invesco S&P SmallCap 600 Revenue ETF
RWJ
$2.08B
| $10K | ﹤0.01% |
+300
| New | +$11.3K |
|
8300
PUT
Rayonier Advanced Materials
RYAM
$569M
| $10K | ﹤0.01% |
4,000
+3,100
| +344% | +$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.