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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LGF.B
2276
CALL
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $1.23M | ﹤0.01% |
223,800
+190,900
| +580% | +$1.27M |
|
2277
BCE
BCE
$19.9B
| $1.23M | ﹤0.01% |
+27,940
| New | +$1.26M |
|
2278
PUT
Cinemark Holdings
CNK
$3.82B
| $1.22M | ﹤0.01% |
141,400
+53,100
| +60% | +$598K |
|
|
SAVE
2279
CALL
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.22M | ﹤0.01% |
62,800
-17,500
| -22% | -$359K |
|
2280
Alamos Gold
AGI
$12.4B
| $1.22M | ﹤0.01% |
120,696
-37,133
| -24% | -$327K |
|
|
CHX
2281
PUT
DELISTED
ChampionX
CHX
| $1.22M | ﹤0.01% |
42,100
+21,600
| +105% | +$596K |
|
2282
PUT
Universal Display
OLED
$3.71B
| $1.22M | ﹤0.01% |
11,300
-18,900
| -63% | -$1.98M |
|
2283
Virtu Financial
VIRT
$5.2B
| $1.22M | ﹤0.01% |
+59,774
| New | +$1.3M |
|
2284
PUT
DHT Holdings
DHT
$2.97B
| $1.22M | ﹤0.01% |
137,000
+83,400
| +156% | +$759K |
|
2285
CALL
TransUnion
TRU
$14.8B
| $1.21M | ﹤0.01% |
21,400
+5,800
| +37% | +$340K |
|
|
HOLX
2286
PUT
DELISTED
Hologic
HOLX
| $1.21M | ﹤0.01% |
16,200
+3,100
| +24% | +$221K |
|
2287
PUT
JetBlue
JBLU
$1.96B
| $1.21M | ﹤0.01% |
186,800
-209,800
| -53% | -$1.53M |
|
2288
RCI Hospitality Holdings
RICK
$199M
| $1.21M | ﹤0.01% |
+12,993
| New | +$1.08M |
|
2289
CALL
Ascendis Pharma A/S
ASND
$16.7B
| $1.21M | ﹤0.01% |
9,900
-3,000
| -23% | -$348K |
|
2290
CALL
Roper Technologies
ROP
$36.3B
| $1.21M | ﹤0.01% |
2,800
-9,700
| -78% | -$4M |
|
2291
Hecla Mining
HL
$10.2B
| $1.21M | ﹤0.01% |
217,125
-32,943
| -13% | -$164K |
|
|
AMRS
2292
CALL
DELISTED
Amyris Inc.
AMRS
| $1.21M | ﹤0.01% |
788,400
-13,900
| -2% | -$31K |
|
2293
CALL
Tower Semiconductor
TSEM
$26.4B
| $1.21M | ﹤0.01% |
27,900
+1,700
| +6% | +$73.9K |
|
|
CALY
2294
CALL
Callaway Golf Company
CALY
$3.26B
| $1.2M | ﹤0.01% |
60,800
-304,500
| -83% | -$6M |
|
|
MOMO
2295
CALL
Hello Group
MOMO
$869M
| $1.2M | ﹤0.01% |
133,100
+69,900
| +111% | +$414K |
|
2296
Boston Scientific
BSX
$65.8B
| $1.19M | ﹤0.01% |
25,811
-67,631
| -72% | -$2.93M |
|
2297
PUT
GoPro
GPRO
$116M
| $1.19M | ﹤0.01% |
239,900
-208,200
| -46% | -$1.09M |
|
2298
CALL
Xylem
XYL
$28.5B
| $1.19M | ﹤0.01% |
10,800
+8,900
| +468% | +$933K |
|
2299
PUT
Community Health Systems
CYH
$385M
| $1.19M | ﹤0.01% |
276,000
-53,100
| -16% | -$163K |
|
2300
Trump Media & Technology Group
DJT
$2.37B
| $1.19M | ﹤0.01% |
79,513
+597
| +0.8% | +$11.7K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.