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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1251
PUT
GameStop
GME
$9.58B
| $113K | 0.01% |
5,472
+1,036
| +23% | +$7.45K |
|
1252
PUT
Nokia
NOK
$54.3B
| $113K | 0.01% |
664
-424
| -39% | -$2.71K |
|
1253
Alaunos Therapeutics
TCRT
$4.69M
| $113K | 0.01% |
102
-258
| -72% | -$264K |
|
1254
CALL
TC Energy
TRP
$72.9B
| $113K | 0.01% |
308
+268
| +670% | +$9.38K |
|
|
BETR
1255
DELISTED
Amplify Snack Brands, Inc.
BETR
| $113K | 0.01% |
7,940
+3,441
| +76% | +$38.4K |
|
1256
CALL
CME Group
CME
$91.9B
| $112K | 0.01% |
625
+271
| +77% | +$24.7K |
|
1257
Galicia Financial Group
GGAL
$8.06B
| $112K | 0.01% |
+3,981
| New | +$110K |
|
|
VRNT
1258
DELISTED
Verint Systems
VRNT
| $112K | 0.01% |
6,605
+6,134
| +1,302% | +$112K |
|
|
SC
1259
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $112K | 0.01% |
10,713
-251
| -2% | -$2.76K |
|
|
SGYPW
1260
PUT
DELISTED
Synergy Pharmaceuticals, Inc. - Warrants
SGYPW
| $112K | 0.01% |
947
+511
| +117% | +$490 |
|
|
QUNR
1261
CALL
DELISTED
Qunar Cayman Islands Limited
QUNR
| $112K | 0.01% |
239
-318
| -57% | -$12.3K |
|
1262
CALL
Alcoa
AA
$11.9B
| $111K | 0.01% |
553
+492
| +807% | +$10K |
|
|
AMRN
1263
PUT
Amarin Corp
AMRN
$285M
| $111K | 0.01% |
78
+35
| +81% | +$1.04K |
|
|
ASRT
1264
PUT
DELISTED
Assertio
ASRT
| $111K | 0.01% |
5
-8
| -62% | -$7.42K |
|
1265
CALL
Centene
CNC
$31.5B
| $111K | 0.01% |
646
+216
| +50% | +$6.45K |
|
1266
CALL
MannKind Corp
MNKD
$1.2B
| $111K | 0.01% |
424
-19
| -4% | -$109 |
|
1267
PUT
Tenet Healthcare
THC
$17.1B
| $111K | 0.01% |
181
+29
| +19% | +$754 |
|
|
ENLC
1268
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $111K | 0.01% |
9,899
+4,413
| +80% | +$47.4K |
|
|
VALE.P
1269
CALL
DELISTED
Vale S A
VALE.P
| $111K | 0.01% |
1,631
+1,501
| +1,155% | +$3.45K |
|
|
CLC
1270
DELISTED
Clarcor
CLC
| $111K | 0.01% |
1,921
+1,825
| +1,901% | +$90K |
|
|
FEIC
1271
DELISTED
FEI COMPANY
FEIC
| $111K | 0.01% |
1,258
+1,195
| +1,897% | +$92.5K |
|
1272
Acadia Healthcare
ACHC
$3.13B
| $110K | 0.01% |
+2,003
| New | +$114K |
|
1273
PUT
BHP
BHP
$212B
| $110K | 0.01% |
575
-397
| -41% | -$8.4K |
|
|
EXAS
1274
DELISTED
Exact Sciences
EXAS
| $110K | 0.01% |
+16,328
| New | +$104K |
|
1275
Lincoln National
LNC
$7.81B
| $110K | 0.01% |
+2,813
| New | +$110K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.