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 | |
|---|---|---|---|---|---|---|
826
Lazard
LAZ
$4.12B
| $219K | 0.02% |
5,660
-7,688
| -58% | -$276K |
|
827
CALL
Harley-Davidson
HOG
$2.78B
| $218K | 0.02% |
389
-529
| -58% | -$23.1K |
|
828
PUT
lululemon athletica
LULU
$12.5B
| $217K | 0.02% |
1,915
+165
| +9% | +$9.91K |
|
829
CALL
PACCAR
PCAR
$70.2B
| $217K | 0.02% |
542
+363
| +203% | +$12.2K |
|
|
UN
830
DELISTED
Unilever NV New York Registry Shares
UN
| $217K | 0.02% |
+4,870
| New | +$210K |
|
831
Murphy Oil
MUR
$5.67B
| $216K | 0.02% |
8,590
-5,434
| -39% | -$109K |
|
832
Trinity Industries
TRN
$2.94B
| $216K | 0.02% |
16,458
-267
| -2% | -$3.75K |
|
833
PUT
Wheaton Precious Metals
WPM
$49.7B
| $216K | 0.02% |
1,666
+1,251
| +301% | +$18.1K |
|
|
JOYY
834
PUT
JOYY Inc
JOYY
$3.62B
| $216K | 0.02% |
541
+60
| +12% | +$3.38K |
|
|
NE
835
DELISTED
Noble Corporation
NE
| $216K | 0.02% |
+20,915
| New | +$190K |
|
836
PUT
Alkermes
ALKS
$8.9B
| $215K | 0.02% |
389
+302
| +347% | +$11.9K |
|
837
CALL
Southwest Airlines
LUV
$22.4B
| $215K | 0.02% |
805
+9
| +1% | +$366 |
|
|
DD
838
PUT
DELISTED
Du Pont De Nemours E I
DD
| $215K | 0.02% |
656
-743
| -53% | -$44.5K |
|
839
Silgan Holdings
SLGN
$4.8B
| $214K | 0.02% |
+8,066
| New | +$209K |
|
|
VA
840
CALL
DELISTED
Virgin America Inc.
VA
| $214K | 0.02% |
288
+64
| +29% | +$1.99K |
|
|
LJPC
841
DELISTED
La Jolla Pharmaceutical Company
LJPC
| $214K | 0.02% |
10,258
+6,674
| +186% | +$119K |
|
842
PUT
Capital One
COF
$121B
| $213K | 0.02% |
1,249
+972
| +351% | +$64.2K |
|
843
Invesco DB Commodity Index Tracking Fund
DBC
$1.75B
| $213K | 0.02% |
16,073
-7,802
| -33% | -$99.8K |
|
844
CALL
Dollar Tree
DLTR
$22.7B
| $213K | 0.02% |
506
-68
| -12% | -$5.36K |
|
845
Neurocrine Biosciences
NBIX
$17.4B
| $213K | 0.02% |
+5,408
| New | +$215K |
|
846
CALL
AB InBev
BUD
$156B
| $212K | 0.02% |
494
-467
| -49% | -$55.4K |
|
847
CALL
Viatris
VTRS
$19.8B
| $212K | 0.02% |
1,713
-1,135
| -40% | -$54.8K |
|
|
STZ.B
848
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $212K | 0.02% |
307
+239
| +351% | +$34.7K |
|
|
JOY
849
PUT
DELISTED
Joy Global Inc
JOY
| $212K | 0.02% |
560
-1,020
| -65% | -$12.8K |
|
|
RLYP
850
DELISTED
RELYPSA INC COM
RLYP
| $212K | 0.02% |
15,647
-18,179
| -54% | -$309K |
|
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.